diff --git a/ext/libstrawberry-common/core/logging.cpp b/ext/libstrawberry-common/core/logging.cpp
index 35a95fb26..9dafb3cde 100644
--- a/ext/libstrawberry-common/core/logging.cpp
+++ b/ext/libstrawberry-common/core/logging.cpp
@@ -115,7 +115,10 @@ class DebugBase : public QDebug {
 class BufferedDebug : public DebugBase<BufferedDebug> {
  public:
   BufferedDebug() = default;
-  explicit BufferedDebug(QtMsgType) : buf_(new QBuffer, later_deleter) {
+  explicit BufferedDebug(QtMsgType msg_type) : buf_(new QBuffer, later_deleter) {
+
+    Q_UNUSED(msg_type)
+
     buf_->open(QIODevice::WriteOnly);
 
     // QDebug doesn't have a method to set a new io device, but swap() allows the devices to be swapped between two instances.
@@ -137,7 +140,9 @@ class LoggedDebug : public DebugBase<LoggedDebug> {
   explicit LoggedDebug(QtMsgType t) : DebugBase(t) { nospace() << kMessageHandlerMagic; }
 };
 
-static void MessageHandler(QtMsgType type, const QMessageLogContext&, const QString &message) {
+static void MessageHandler(QtMsgType type, const QMessageLogContext &message_log_context, const QString &message) {
+
+  Q_UNUSED(message_log_context)
 
   if (message.startsWith(QLatin1String(kMessageHandlerMagic))) {
     QByteArray message_data = message.toUtf8();
diff --git a/src/context/contextalbum.cpp b/src/context/contextalbum.cpp
index 95ad8f542..a5d99c18d 100644
--- a/src/context/contextalbum.cpp
+++ b/src/context/contextalbum.cpp
@@ -100,7 +100,9 @@ QSize ContextAlbum::sizeHint() const {
 
 }
 
-void ContextAlbum::paintEvent(QPaintEvent*) {
+void ContextAlbum::paintEvent(QPaintEvent *paint_event) {
+
+  Q_UNUSED(paint_event)
 
   QPainter p(this);
   p.setRenderHint(QPainter::SmoothPixmapTransform);
diff --git a/src/context/contextalbum.h b/src/context/contextalbum.h
index 89d4a9b31..7316ce414 100644
--- a/src/context/contextalbum.h
+++ b/src/context/contextalbum.h
@@ -56,7 +56,7 @@ class ContextAlbum : public QWidget {
 
  protected:
   QSize sizeHint() const override;
-  void paintEvent(QPaintEvent*) override;
+  void paintEvent(QPaintEvent *paint_event) override;
   void mouseDoubleClickEvent(QMouseEvent *e) override;
   void contextMenuEvent(QContextMenuEvent *e) override;
 
diff --git a/src/core/mergedproxymodel.cpp b/src/core/mergedproxymodel.cpp
index 414447b1d..3dc7bcf13 100644
--- a/src/core/mergedproxymodel.cpp
+++ b/src/core/mergedproxymodel.cpp
@@ -245,20 +245,32 @@ QModelIndex MergedProxyModel::GetActualSourceParent(const QModelIndex &source_pa
 
 }
 
-void MergedProxyModel::RowsAboutToBeInserted(const QModelIndex &source_parent, int start, int end) {
+void MergedProxyModel::RowsAboutToBeInserted(const QModelIndex &source_parent, const int start, const int end) {
   beginInsertRows(mapFromSource(GetActualSourceParent(source_parent, qobject_cast<QAbstractItemModel*>(sender()))), start, end);
 }
 
-void MergedProxyModel::RowsInserted(const QModelIndex&, int, int) {
+void MergedProxyModel::RowsInserted(const QModelIndex &source_parent, const int start, const int end) {
+
+  Q_UNUSED(source_parent)
+  Q_UNUSED(start)
+  Q_UNUSED(end)
+
   endInsertRows();
+
 }
 
-void MergedProxyModel::RowsAboutToBeRemoved(const QModelIndex &source_parent, int start, int end) {
+void MergedProxyModel::RowsAboutToBeRemoved(const QModelIndex &source_parent, const int start, const int end) {
   beginRemoveRows(mapFromSource(GetActualSourceParent(source_parent, qobject_cast<QAbstractItemModel*>(sender()))), start, end);
 }
 
-void MergedProxyModel::RowsRemoved(const QModelIndex&, int, int) {
+void MergedProxyModel::RowsRemoved(const QModelIndex &source_parent, const int start, const int end) {
+
+  Q_UNUSED(source_parent)
+  Q_UNUSED(start)
+  Q_UNUSED(end)
+
   endRemoveRows();
+
 }
 
 QModelIndex MergedProxyModel::mapToSource(const QModelIndex &proxy_index) const {
@@ -294,7 +306,7 @@ QModelIndex MergedProxyModel::mapFromSource(const QModelIndex &source_index) con
 
 }
 
-QModelIndex MergedProxyModel::index(int row, int column, const QModelIndex &parent) const {
+QModelIndex MergedProxyModel::index(const int row, const int column, const QModelIndex &parent) const {
 
   QModelIndex source_index;
 
@@ -380,7 +392,7 @@ bool MergedProxyModel::hasChildren(const QModelIndex &parent) const {
 
 }
 
-QVariant MergedProxyModel::data(const QModelIndex &proxy_index, int role) const {
+QVariant MergedProxyModel::data(const QModelIndex &proxy_index, const int role) const {
 
   QModelIndex source_index = mapToSource(proxy_index);
   if (!IsKnownModel(source_index.model())) return QVariant();
@@ -407,7 +419,7 @@ Qt::ItemFlags MergedProxyModel::flags(const QModelIndex &idx) const {
 
 }
 
-bool MergedProxyModel::setData(const QModelIndex &idx, const QVariant &value, int role) {
+bool MergedProxyModel::setData(const QModelIndex &idx, const QVariant &value, const int role) {
 
   QModelIndex source_index = mapToSource(idx);
 
@@ -456,7 +468,7 @@ QMimeData *MergedProxyModel::mimeData(const QModelIndexList &indexes) const {
 
 }
 
-bool MergedProxyModel::dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) {
+bool MergedProxyModel::dropMimeData(const QMimeData *data, Qt::DropAction action, const int row, const int column, const QModelIndex &parent) {
 
   if (!parent.isValid()) {
     return false;
diff --git a/src/core/mergedproxymodel.h b/src/core/mergedproxymodel.h
index 8f89a5aed..fdb6053c7 100644
--- a/src/core/mergedproxymodel.h
+++ b/src/core/mergedproxymodel.h
@@ -59,18 +59,18 @@ class MergedProxyModel : public QAbstractProxyModel {
   QModelIndex FindSourceParent(const QModelIndex &proxy_index) const;
 
   // QAbstractItemModel
-  QModelIndex index(int row, int column, const QModelIndex &parent) const override;
+  QModelIndex index(const int row, const int column, const QModelIndex &parent) const override;
   QModelIndex parent(const QModelIndex &child) const override;
   int rowCount(const QModelIndex &parent) const override;
   int columnCount(const QModelIndex &parent) const override;
-  QVariant data(const QModelIndex &proxy_index, int role = Qt::DisplayRole) const override;
+  QVariant data(const QModelIndex &proxy_index, const int role = Qt::DisplayRole) const override;
   bool hasChildren(const QModelIndex &parent) const override;
   QMap<int, QVariant> itemData(const QModelIndex &proxy_index) const override;
   Qt::ItemFlags flags(const QModelIndex &idx) const override;
-  bool setData(const QModelIndex &idx, const QVariant &value, int role) override;
+  bool setData(const QModelIndex &idx, const QVariant &value, const int role) override;
   QStringList mimeTypes() const override;
   QMimeData *mimeData(const QModelIndexList &indexes) const override;
-  bool dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) override;
+  bool dropMimeData(const QMimeData *data, Qt::DropAction action, const int row, const int column, const QModelIndex &parent) override;
   bool canFetchMore(const QModelIndex &parent) const override;
   void fetchMore(const QModelIndex &parent) override;
 
@@ -93,10 +93,10 @@ class MergedProxyModel : public QAbstractProxyModel {
   void SubModelAboutToBeReset();
   void SubModelResetSlot();
 
-  void RowsAboutToBeInserted(const QModelIndex &source_parent, int start, int end);
-  void RowsInserted(const QModelIndex &source_parent, int start, int end);
-  void RowsAboutToBeRemoved(const QModelIndex &source_parent, int start, int end);
-  void RowsRemoved(const QModelIndex &source_parent, int start, int end);
+  void RowsAboutToBeInserted(const QModelIndex &source_parent, const int start, const int end);
+  void RowsInserted(const QModelIndex &source_parent, const int start, const int end);
+  void RowsAboutToBeRemoved(const QModelIndex &source_parent, const int start, const int end);
+  void RowsRemoved(const QModelIndex &source_parent, const int start, const int end);
   void DataChanged(const QModelIndex &top_left, const QModelIndex &bottom_right);
 
   void LayoutAboutToBeChanged();
diff --git a/src/core/qtsystemtrayicon.cpp b/src/core/qtsystemtrayicon.cpp
index 3f3195a05..b2f8e917a 100644
--- a/src/core/qtsystemtrayicon.cpp
+++ b/src/core/qtsystemtrayicon.cpp
@@ -190,7 +190,8 @@ void SystemTrayIcon::MuteButtonStateChanged(const bool value) {
   if (action_mute_) action_mute_->setChecked(value);
 }
 
-void SystemTrayIcon::SetNowPlaying(const Song &song, const QUrl&) {
+void SystemTrayIcon::SetNowPlaying(const Song &song, const QUrl &url) {
+  Q_UNUSED(url)
   if (available_) setToolTip(song.PrettyTitleWithArtist());
 }
 
diff --git a/src/core/qtsystemtrayicon.h b/src/core/qtsystemtrayicon.h
index 3479a436b..efdc9daab 100644
--- a/src/core/qtsystemtrayicon.h
+++ b/src/core/qtsystemtrayicon.h
@@ -56,7 +56,7 @@ class SystemTrayIcon : public QSystemTrayIcon {
   void SetStopped();
   void SetProgress(const int percentage);
   void MuteButtonStateChanged(const bool value);
-  void SetNowPlaying(const Song &song, const QUrl&);
+  void SetNowPlaying(const Song &song, const QUrl &url);
   void ClearNowPlaying();
   void LoveVisibilityChanged(const bool value);
   void LoveStateChanged(const bool value);
diff --git a/src/core/songloader.cpp b/src/core/songloader.cpp
index 257875b27..f97251c12 100644
--- a/src/core/songloader.cpp
+++ b/src/core/songloader.cpp
@@ -545,7 +545,10 @@ SongLoader::Result SongLoader::LoadRemote() {
 #endif
 
 #ifdef HAVE_GSTREAMER
-void SongLoader::TypeFound(GstElement*, uint, GstCaps *caps, void *self) {
+void SongLoader::TypeFound(GstElement *typefind, const uint probability, GstCaps *caps, void *self) {
+
+  Q_UNUSED(typefind)
+  Q_UNUSED(probability)
 
   SongLoader *instance = static_cast<SongLoader*>(self);
 
@@ -567,7 +570,9 @@ void SongLoader::TypeFound(GstElement*, uint, GstCaps *caps, void *self) {
 #endif
 
 #ifdef HAVE_GSTREAMER
-GstPadProbeReturn SongLoader::DataReady(GstPad*, GstPadProbeInfo *info, gpointer self) {
+GstPadProbeReturn SongLoader::DataReady(GstPad *pad, GstPadProbeInfo *info, gpointer self) {
+
+  Q_UNUSED(pad)
 
   SongLoader *instance = reinterpret_cast<SongLoader*>(self);
 
@@ -594,7 +599,9 @@ GstPadProbeReturn SongLoader::DataReady(GstPad*, GstPadProbeInfo *info, gpointer
 #endif
 
 #ifdef HAVE_GSTREAMER
-gboolean SongLoader::BusWatchCallback(GstBus*, GstMessage *msg, gpointer self) {
+gboolean SongLoader::BusWatchCallback(GstBus *bus, GstMessage *msg, gpointer self) {
+
+  Q_UNUSED(bus)
 
   SongLoader *instance = reinterpret_cast<SongLoader*>(self);
 
@@ -612,7 +619,9 @@ gboolean SongLoader::BusWatchCallback(GstBus*, GstMessage *msg, gpointer self) {
 #endif
 
 #ifdef HAVE_GSTREAMER
-GstBusSyncReply SongLoader::BusCallbackSync(GstBus*, GstMessage *msg, gpointer self) {
+GstBusSyncReply SongLoader::BusCallbackSync(GstBus *bus, GstMessage *msg, gpointer self) {
+
+  Q_UNUSED(bus)
 
   SongLoader *instance = reinterpret_cast<SongLoader*>(self);
 
diff --git a/src/core/songloader.h b/src/core/songloader.h
index fc6cd1a95..74e840c2b 100644
--- a/src/core/songloader.h
+++ b/src/core/songloader.h
@@ -121,10 +121,10 @@ class SongLoader : public QObject {
   Result LoadRemote();
 
   // GStreamer callbacks
-  static void TypeFound(GstElement *typefind, uint probability, GstCaps *caps, void *self);
-  static GstPadProbeReturn DataReady(GstPad*, GstPadProbeInfo *info, gpointer self);
-  static GstBusSyncReply BusCallbackSync(GstBus*, GstMessage*, gpointer);
-  static gboolean BusWatchCallback(GstBus*, GstMessage*, gpointer);
+  static void TypeFound(GstElement *typefind, const uint probability, GstCaps *caps, void *self);
+  static GstPadProbeReturn DataReady(GstPad *pad, GstPadProbeInfo *info, gpointer self);
+  static GstBusSyncReply BusCallbackSync(GstBus *bus, GstMessage *msg, gpointer self);
+  static gboolean BusWatchCallback(GstBus *bus, GstMessage *msg, gpointer self);
 
   void ErrorMessageReceived(GstMessage *msg);
   void EndOfStreamReached();
diff --git a/src/device/cddalister.cpp b/src/device/cddalister.cpp
index f7daddeb1..8c7af2f5b 100644
--- a/src/device/cddalister.cpp
+++ b/src/device/cddalister.cpp
@@ -39,10 +39,14 @@
 
 QStringList CddaLister::DeviceUniqueIDs() { return devices_list_; }
 
-QVariantList CddaLister::DeviceIcons(const QString &) {
+QVariantList CddaLister::DeviceIcons(const QString &id) {
+
+  Q_UNUSED(id)
+
   QVariantList icons;
   icons << QStringLiteral("media-optical");
   return icons;
+
 }
 
 QString CddaLister::DeviceManufacturer(const QString &id) {
@@ -71,11 +75,24 @@ QString CddaLister::DeviceModel(const QString &id) {
 
 }
 
-quint64 CddaLister::DeviceCapacity(const QString&) { return 0; }
+quint64 CddaLister::DeviceCapacity(const QString &id) {
 
-quint64 CddaLister::DeviceFreeSpace(const QString&) { return 0; }
+  Q_UNUSED(id)
 
-QVariantMap CddaLister::DeviceHardwareInfo(const QString&) {
+  return 0;
+
+}
+
+quint64 CddaLister::DeviceFreeSpace(const QString &id) {
+
+  Q_UNUSED(id)
+
+  return 0;
+
+}
+
+QVariantMap CddaLister::DeviceHardwareInfo(const QString &id) {
+  Q_UNUSED(id)
   return QVariantMap();
 }
 
@@ -100,7 +117,9 @@ void CddaLister::UnmountDevice(const QString &id) {
   cdio_eject_media_drive(id.toLocal8Bit().constData());
 }
 
-void CddaLister::UpdateDeviceFreeSpace(const QString&) {}
+void CddaLister::UpdateDeviceFreeSpace(const QString &id) {
+  Q_UNUSED(id)
+}
 
 bool CddaLister::Init() {
 
diff --git a/src/device/connecteddevice.cpp b/src/device/connecteddevice.cpp
index f4ddfd010..7d0b26519 100644
--- a/src/device/connecteddevice.cpp
+++ b/src/device/connecteddevice.cpp
@@ -132,12 +132,18 @@ void ConnectedDevice::Eject() {
 
 }
 
-bool ConnectedDevice::FinishCopy(bool success, QString&) {
+bool ConnectedDevice::FinishCopy(bool success, QString &error_text) {
+
+  Q_UNUSED(error_text)
+
   lister_->UpdateDeviceFreeSpace(unique_id_);
+
   return success;
+
 }
 
-bool ConnectedDevice::FinishDelete(bool success, QString&) {
+bool ConnectedDevice::FinishDelete(bool success, QString &error_text) {
+  Q_UNUSED(error_text)
   lister_->UpdateDeviceFreeSpace(unique_id_);
   return success;
 }
diff --git a/src/device/devicestatefiltermodel.cpp b/src/device/devicestatefiltermodel.cpp
index df62db1dc..cc897d3cb 100644
--- a/src/device/devicestatefiltermodel.cpp
+++ b/src/device/devicestatefiltermodel.cpp
@@ -38,11 +38,14 @@ DeviceStateFilterModel::DeviceStateFilterModel(QObject *parent, DeviceManager::S
 
 }
 
-bool DeviceStateFilterModel::filterAcceptsRow(int row, const QModelIndex&) const {
+bool DeviceStateFilterModel::filterAcceptsRow(const int row, const QModelIndex &parent) const {
+  Q_UNUSED(parent)
   return sourceModel()->index(row, 0).data(DeviceManager::Role_State).toInt() != state_ && sourceModel()->index(row, 0).data(DeviceManager::Role_CopyMusic).toBool();
 }
 
-void DeviceStateFilterModel::ProxyRowCountChanged(const QModelIndex&, const int, const int) {
+void DeviceStateFilterModel::ProxyRowCountChanged(const QModelIndex &idx, const int, const int) {
+
+  Q_UNUSED(idx)
 
   Q_EMIT IsEmptyChanged(rowCount() == 0);
 
diff --git a/src/device/devicestatefiltermodel.h b/src/device/devicestatefiltermodel.h
index 10c7aec95..eb00f72be 100644
--- a/src/device/devicestatefiltermodel.h
+++ b/src/device/devicestatefiltermodel.h
@@ -45,7 +45,7 @@ class DeviceStateFilterModel : public QSortFilterProxyModel {
   void IsEmptyChanged(const bool is_empty);
 
  protected:
-  bool filterAcceptsRow(int row, const QModelIndex &parent) const override;
+  bool filterAcceptsRow(const int row, const QModelIndex &parent) const override;
 
  private Q_SLOTS:
   void ProxyReset();
diff --git a/src/device/giolister.cpp b/src/device/giolister.cpp
index bb3280b5f..a6a067a65 100644
--- a/src/device/giolister.cpp
+++ b/src/device/giolister.cpp
@@ -90,7 +90,8 @@ void OperationFinished(F f, GObject *object, GAsyncResult *result) {
 
 }
 
-void GioLister::VolumeMountFinished(GObject *object, GAsyncResult *result, gpointer) {
+void GioLister::VolumeMountFinished(GObject *object, GAsyncResult *result, gpointer instance) {
+  Q_UNUSED(instance)
   OperationFinished<GVolume>(std::bind(g_volume_mount_finish, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3), object, result);
 }
 
@@ -271,24 +272,29 @@ QList<QUrl> GioLister::MakeDeviceUrls(const QString &id) {
 
 }
 
-void GioLister::VolumeAddedCallback(GVolumeMonitor*, GVolume *v, gpointer d) {
-  static_cast<GioLister*>(d)->VolumeAdded(v);
+void GioLister::VolumeAddedCallback(GVolumeMonitor *volume_monitor, GVolume *volume, gpointer instance) {
+  Q_UNUSED(volume_monitor)
+  static_cast<GioLister*>(instance)->VolumeAdded(volume);
 }
 
-void GioLister::VolumeRemovedCallback(GVolumeMonitor*, GVolume *v, gpointer d) {
-  static_cast<GioLister*>(d)->VolumeRemoved(v);
+void GioLister::VolumeRemovedCallback(GVolumeMonitor *volume_monitor, GVolume *volume, gpointer instance) {
+  Q_UNUSED(volume_monitor)
+  static_cast<GioLister*>(instance)->VolumeRemoved(volume);
 }
 
-void GioLister::MountAddedCallback(GVolumeMonitor*, GMount *m, gpointer d) {
-  static_cast<GioLister*>(d)->MountAdded(m);
+void GioLister::MountAddedCallback(GVolumeMonitor *volume_monitor, GMount *mount, gpointer instance) {
+  Q_UNUSED(volume_monitor)
+  static_cast<GioLister*>(instance)->MountAdded(mount);
 }
 
-void GioLister::MountChangedCallback(GVolumeMonitor*, GMount *m, gpointer d) {
-  static_cast<GioLister*>(d)->MountChanged(m);
+void GioLister::MountChangedCallback(GVolumeMonitor *volume_monitor, GMount *mount, gpointer instance) {
+  Q_UNUSED(volume_monitor)
+  static_cast<GioLister*>(instance)->MountChanged(mount);
 }
 
-void GioLister::MountRemovedCallback(GVolumeMonitor*, GMount *m, gpointer d) {
-  static_cast<GioLister*>(d)->MountRemoved(m);
+void GioLister::MountRemovedCallback(GVolumeMonitor *volume_monitor, GMount *mount, gpointer instance) {
+  Q_UNUSED(volume_monitor)
+  static_cast<GioLister*>(instance)->MountRemoved(mount);
 }
 
 void GioLister::VolumeAdded(GVolume *volume) {
@@ -570,11 +576,13 @@ void GioLister::VolumeEjectFinished(GObject *object, GAsyncResult *result, gpoin
   OperationFinished<GVolume>(std::bind(g_volume_eject_with_operation_finish, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3), object, result);
 }
 
-void GioLister::MountEjectFinished(GObject *object, GAsyncResult *result, gpointer) {
+void GioLister::MountEjectFinished(GObject *object, GAsyncResult *result, gpointer instance) {
+  Q_UNUSED(instance)
   OperationFinished<GMount>(std::bind(g_mount_eject_with_operation_finish, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3), object, result);
 }
 
-void GioLister::MountUnmountFinished(GObject *object, GAsyncResult *result, gpointer) {
+void GioLister::MountUnmountFinished(GObject *object, GAsyncResult *result, gpointer instance) {
+  Q_UNUSED(instance)
   OperationFinished<GMount>(std::bind(g_mount_unmount_with_operation_finish, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3), object, result);
 }
 
diff --git a/src/device/giolister.h b/src/device/giolister.h
index f863ce53e..d19c66704 100644
--- a/src/device/giolister.h
+++ b/src/device/giolister.h
@@ -116,17 +116,17 @@ class GioLister : public DeviceLister {
   void MountChanged(GMount *mount);
   void MountRemoved(GMount *mount);
 
-  static void VolumeAddedCallback(GVolumeMonitor*, GVolume*, gpointer);
-  static void VolumeRemovedCallback(GVolumeMonitor*, GVolume*, gpointer);
+  static void VolumeAddedCallback(GVolumeMonitor *volume_monitor, GVolume *volume, gpointer instance);
+  static void VolumeRemovedCallback(GVolumeMonitor *volume_monitor, GVolume *volume, gpointer instance);
 
-  static void MountAddedCallback(GVolumeMonitor*, GMount*, gpointer);
-  static void MountChangedCallback(GVolumeMonitor*, GMount*, gpointer);
-  static void MountRemovedCallback(GVolumeMonitor*, GMount*, gpointer);
+  static void MountAddedCallback(GVolumeMonitor *volume_monitor, GMount*, gpointer instance);
+  static void MountChangedCallback(GVolumeMonitor *volume_monitor, GMount*, gpointer instance);
+  static void MountRemovedCallback(GVolumeMonitor *volume_monitor, GMount *mount, gpointer instance);
 
-  static void VolumeMountFinished(GObject *object, GAsyncResult *result, gpointer);
-  static void VolumeEjectFinished(GObject *object, GAsyncResult *result, gpointer);
-  static void MountEjectFinished(GObject *object, GAsyncResult *result, gpointer);
-  static void MountUnmountFinished(GObject *object, GAsyncResult *result, gpointer);
+  static void VolumeMountFinished(GObject *object, GAsyncResult *result, gpointer instance);
+  static void VolumeEjectFinished(GObject *object, GAsyncResult *result, gpointer instance);
+  static void MountEjectFinished(GObject *object, GAsyncResult *result, gpointer instance);
+  static void MountUnmountFinished(GObject *object, GAsyncResult *result, gpointer instance);
 
   // You MUST hold the mutex while calling this function
   QString FindUniqueIdByMount(GMount *mount) const;
diff --git a/src/engine/chromaprinter.cpp b/src/engine/chromaprinter.cpp
index 1a4f7f431..ddb232ef6 100644
--- a/src/engine/chromaprinter.cpp
+++ b/src/engine/chromaprinter.cpp
@@ -189,7 +189,9 @@ QString Chromaprinter::CreateFingerprint() {
 
 }
 
-void Chromaprinter::NewPadCallback(GstElement*, GstPad *pad, gpointer data) {
+void Chromaprinter::NewPadCallback(GstElement *element, GstPad *pad, gpointer data) {
+
+  Q_UNUSED(element)
 
   Chromaprinter *instance = reinterpret_cast<Chromaprinter*>(data);
   GstPad *const audiopad = gst_element_get_static_pad(instance->convert_element_, "sink");
diff --git a/src/engine/chromaprinter.h b/src/engine/chromaprinter.h
index a2e8215de..dda6ef67e 100644
--- a/src/engine/chromaprinter.h
+++ b/src/engine/chromaprinter.h
@@ -49,7 +49,7 @@ class Chromaprinter {
  private:
   static GstElement *CreateElement(const QString &factory_name, GstElement *bin = nullptr);
 
-  static void NewPadCallback(GstElement*, GstPad *pad, gpointer data);
+  static void NewPadCallback(GstElement *element, GstPad *pad, gpointer data);
   static GstFlowReturn NewBufferCallback(GstAppSink *app_sink, gpointer self);
 
  private:
diff --git a/src/engine/enginebase.cpp b/src/engine/enginebase.cpp
index ce15614e5..dfb5e7175 100644
--- a/src/engine/enginebase.cpp
+++ b/src/engine/enginebase.cpp
@@ -114,8 +114,9 @@ QString EngineBase::Description(const Type type) {
 
 }
 
-bool EngineBase::Load(const QUrl &media_url, const QUrl &stream_url, const TrackChangeFlags, const bool force_stop_at_end, const quint64 beginning_nanosec, const qint64 end_nanosec, const std::optional<double> ebur128_integrated_loudness_lufs) {
+bool EngineBase::Load(const QUrl &media_url, const QUrl &stream_url, const TrackChangeFlags track_change_flags, const bool force_stop_at_end, const quint64 beginning_nanosec, const qint64 end_nanosec, const std::optional<double> ebur128_integrated_loudness_lufs) {
 
+  Q_UNUSED(track_change_flags)
   Q_UNUSED(force_stop_at_end);
 
   media_url_ = media_url;
diff --git a/src/engine/enginebase.h b/src/engine/enginebase.h
index 0dc877398..2940c99f2 100644
--- a/src/engine/enginebase.h
+++ b/src/engine/enginebase.h
@@ -104,7 +104,7 @@ class EngineBase : public QObject {
   virtual bool Init() = 0;
   virtual State state() const = 0;
   virtual void StartPreloading(const QUrl&, const QUrl&, const bool, const qint64, const qint64) {}
-  virtual bool Load(const QUrl &media_url, const QUrl &stream_url, const TrackChangeFlags change, const bool force_stop_at_end, const quint64 beginning_nanosec, const qint64 end_nanosec, const std::optional<double> ebur128_integrated_loudness_lufs);
+  virtual bool Load(const QUrl &media_url, const QUrl &stream_url, const TrackChangeFlags track_change_flags, const bool force_stop_at_end, const quint64 beginning_nanosec, const qint64 end_nanosec, const std::optional<double> ebur128_integrated_loudness_lufs);
   virtual bool Play(const bool pause, const quint64 offset_nanosec) = 0;
   virtual void Stop(const bool stop_after = false) = 0;
   virtual void Pause() = 0;
diff --git a/src/engine/gstengine.cpp b/src/engine/gstengine.cpp
index ca77cff2a..d78e7c39c 100644
--- a/src/engine/gstengine.cpp
+++ b/src/engine/gstengine.cpp
@@ -1063,7 +1063,10 @@ void GstEngine::UpdateScope(const int chunk_length) {
 
 }
 
-void GstEngine::StreamDiscovered(GstDiscoverer*, GstDiscovererInfo *info, GError*, gpointer self) {
+void GstEngine::StreamDiscovered(GstDiscoverer *discoverer, GstDiscovererInfo *info, GError *error, gpointer self) {
+
+  Q_UNUSED(discoverer)
+  Q_UNUSED(error)
 
   GstEngine *instance = reinterpret_cast<GstEngine*>(self);
   if (!instance->current_pipeline_) return;
@@ -1146,7 +1149,10 @@ void GstEngine::StreamDiscovered(GstDiscoverer*, GstDiscovererInfo *info, GError
 
 }
 
-void GstEngine::StreamDiscoveryFinished(GstDiscoverer*, gpointer) {}
+void GstEngine::StreamDiscoveryFinished(GstDiscoverer *discoverer, gpointer self) {
+  Q_UNUSED(discoverer)
+  Q_UNUSED(self)
+}
 
 QString GstEngine::GSTdiscovererErrorMessage(GstDiscovererResult result) {
 
diff --git a/src/engine/gstengine.h b/src/engine/gstengine.h
index 3672a768c..22291d32e 100644
--- a/src/engine/gstengine.h
+++ b/src/engine/gstengine.h
@@ -144,8 +144,8 @@ class GstEngine : public EngineBase, public GstBufferConsumer {
 
   void UpdateScope(int chunk_length);
 
-  static void StreamDiscovered(GstDiscoverer*, GstDiscovererInfo *info, GError*, gpointer self);
-  static void StreamDiscoveryFinished(GstDiscoverer*, gpointer);
+  static void StreamDiscovered(GstDiscoverer *discoverer, GstDiscovererInfo *info, GError *error, gpointer self);
+  static void StreamDiscoveryFinished(GstDiscoverer *discoverer, gpointer self);
   static QString GSTdiscovererErrorMessage(GstDiscovererResult result);
 
   bool OldExclusivePipelineActive() const;
diff --git a/src/engine/gststartup.cpp b/src/engine/gststartup.cpp
index 0e8b12904..45a8aa59a 100644
--- a/src/engine/gststartup.cpp
+++ b/src/engine/gststartup.cpp
@@ -48,7 +48,9 @@ using namespace Qt::Literals::StringLiterals;
 
 GThread *GstStartup::kGThread = nullptr;
 
-gpointer GstStartup::GLibMainLoopThreadFunc(gpointer) {
+gpointer GstStartup::GLibMainLoopThreadFunc(gpointer data) {
+
+  Q_UNUSED(data)
 
   qLog(Info) << "Creating GLib main event loop.";
 
diff --git a/src/engine/gststartup.h b/src/engine/gststartup.h
index 2a85dd72f..e080c3ecb 100644
--- a/src/engine/gststartup.h
+++ b/src/engine/gststartup.h
@@ -40,7 +40,7 @@ class GstStartup : public QObject {
 
  private:
   static GThread *kGThread;
-  static gpointer GLibMainLoopThreadFunc(gpointer);
+  static gpointer GLibMainLoopThreadFunc(gpointer data);
 
   static void InitializeGStreamer();
   static void SetEnvironment();
diff --git a/src/equalizer/equalizer.cpp b/src/equalizer/equalizer.cpp
index c6d8f0ac1..4cc8c4b71 100644
--- a/src/equalizer/equalizer.cpp
+++ b/src/equalizer/equalizer.cpp
@@ -299,7 +299,9 @@ void Equalizer::StereoBalancerEnabledChangedSlot(const bool enabled) {
 
 }
 
-void Equalizer::StereoBalanceSliderChanged(const int) {
+void Equalizer::StereoBalanceSliderChanged(const int value) {
+
+  Q_UNUSED(value)
 
   Q_EMIT StereoBalanceChanged(stereo_balance());
   Save();
@@ -348,7 +350,9 @@ void Equalizer::Save() {
 
 }
 
-void Equalizer::closeEvent(QCloseEvent*) {
+void Equalizer::closeEvent(QCloseEvent *e) {
+
+  Q_UNUSED(e)
 
   QString name = ui_->preset->currentText();
   if (!presets_.contains(name)) return;
diff --git a/src/equalizer/equalizer.h b/src/equalizer/equalizer.h
index 984cc0edb..b11c39ce8 100644
--- a/src/equalizer/equalizer.h
+++ b/src/equalizer/equalizer.h
@@ -71,7 +71,7 @@ class Equalizer : public QDialog {
   void EqualizerParametersChanged(const int preamp, const QList<int> &band_gains);
 
  protected:
-  void closeEvent(QCloseEvent*) override;
+  void closeEvent(QCloseEvent *e) override;
 
  private Q_SLOTS:
   void StereoBalancerEnabledChangedSlot(const bool enabled);
diff --git a/src/globalshortcuts/globalshortcut-x11.cpp b/src/globalshortcuts/globalshortcut-x11.cpp
index ee52429fd..abdc8d47f 100644
--- a/src/globalshortcuts/globalshortcut-x11.cpp
+++ b/src/globalshortcuts/globalshortcut-x11.cpp
@@ -91,7 +91,10 @@ int GlobalShortcut::nativeKeycode(const Qt::Key qt_keycode) {
 
 }
 
-int GlobalShortcut::nativeKeycode2(const Qt::Key) { return 0; }
+int GlobalShortcut::nativeKeycode2(const Qt::Key key) {
+  Q_UNUSED(key)
+  return 0;
+}
 
 bool GlobalShortcut::registerShortcut(const int native_key, const int native_mods) {
 
diff --git a/src/globalshortcuts/globalshortcutsbackend-gnome.cpp b/src/globalshortcuts/globalshortcutsbackend-gnome.cpp
index fb41b1ce6..033fec7d9 100644
--- a/src/globalshortcuts/globalshortcutsbackend-gnome.cpp
+++ b/src/globalshortcuts/globalshortcutsbackend-gnome.cpp
@@ -117,7 +117,9 @@ void GlobalShortcutsBackendGnome::DoUnregister() {
 
 }
 
-void GlobalShortcutsBackendGnome::GnomeMediaKeyPressed(const QString&, const QString &key) {
+void GlobalShortcutsBackendGnome::GnomeMediaKeyPressed(const QString &application, const QString &key) {
+
+  Q_UNUSED(application)
 
   auto shortcuts = manager_->shortcuts();
   if (key == "Play"_L1) shortcuts[QStringLiteral("play_pause")].action->trigger();
diff --git a/src/globalshortcuts/globalshortcutsbackend-kde.cpp b/src/globalshortcuts/globalshortcutsbackend-kde.cpp
index 742a6ca17..ff66c8bd6 100644
--- a/src/globalshortcuts/globalshortcutsbackend-kde.cpp
+++ b/src/globalshortcuts/globalshortcutsbackend-kde.cpp
@@ -207,7 +207,9 @@ QList<QKeySequence> GlobalShortcutsBackendKDE::ToKeySequenceList(const QList<int
 
 }
 
-void GlobalShortcutsBackendKDE::GlobalShortcutPressed(const QString &component_unique, const QString &shortcut_unique, qint64) {
+void GlobalShortcutsBackendKDE::GlobalShortcutPressed(const QString &component_unique, const QString &shortcut_unique, const qint64 timestamp) {
+
+  Q_UNUSED(timestamp)
 
   if (QCoreApplication::applicationName() == component_unique && actions_.contains(shortcut_unique)) {
     const QList<QAction*> actions = actions_.values(shortcut_unique);
diff --git a/src/globalshortcuts/globalshortcutsbackend-kde.h b/src/globalshortcuts/globalshortcutsbackend-kde.h
index afb284220..290a74429 100644
--- a/src/globalshortcuts/globalshortcutsbackend-kde.h
+++ b/src/globalshortcuts/globalshortcutsbackend-kde.h
@@ -59,7 +59,7 @@ class GlobalShortcutsBackendKDE : public GlobalShortcutsBackend {
 
  private Q_SLOTS:
   void RegisterFinished(QDBusPendingCallWatcher *watcher);
-  void GlobalShortcutPressed(const QString &component_unique, const QString &shortcut_unique, qint64);
+  void GlobalShortcutPressed(const QString &component_unique, const QString &shortcut_unique, const qint64 timestamp);
 
  private:
   OrgKdeKGlobalAccelInterface *interface_;
diff --git a/src/globalshortcuts/globalshortcutsbackend-mate.cpp b/src/globalshortcuts/globalshortcutsbackend-mate.cpp
index 0f29f6555..f45d0d1fa 100644
--- a/src/globalshortcuts/globalshortcutsbackend-mate.cpp
+++ b/src/globalshortcuts/globalshortcutsbackend-mate.cpp
@@ -117,7 +117,9 @@ void GlobalShortcutsBackendMate::DoUnregister() {
 
 }
 
-void GlobalShortcutsBackendMate::MateMediaKeyPressed(const QString&, const QString &key) {
+void GlobalShortcutsBackendMate::MateMediaKeyPressed(const QString &application, const QString &key) {
+
+  Q_UNUSED(application)
 
   auto shortcuts = manager_->shortcuts();
   if (key == "Play"_L1) shortcuts[QStringLiteral("play_pause")].action->trigger();
diff --git a/src/lyrics/lyricfindlyricsprovider.h b/src/lyrics/lyricfindlyricsprovider.h
index c36a69d43..13cebb201 100644
--- a/src/lyrics/lyricfindlyricsprovider.h
+++ b/src/lyrics/lyricfindlyricsprovider.h
@@ -46,7 +46,7 @@ class LyricFindLyricsProvider : public JsonLyricsProvider {
   static QUrl Url(const LyricsSearchRequest &request);
   static QString StringFixup(const QString &text);
   void StartSearch(const int id, const LyricsSearchRequest &request) override;
-  void EndSearch(const int id, const LyricsSearchRequest &request, const LyricsSearchResults &lyrics = LyricsSearchResults());
+  void EndSearch(const int id, const LyricsSearchRequest &request, const LyricsSearchResults &results = LyricsSearchResults());
   void Error(const QString &error, const QVariant &debug = QVariant()) override;
 
  private Q_SLOTS:
diff --git a/src/moodbar/moodbarproxystyle.cpp b/src/moodbar/moodbarproxystyle.cpp
index bce12cd53..4524ee705 100644
--- a/src/moodbar/moodbarproxystyle.cpp
+++ b/src/moodbar/moodbarproxystyle.cpp
@@ -54,7 +54,7 @@ constexpr int kArrowWidth = 17;
 constexpr int kArrowHeight = 13;
 }  // namespace
 
-MoodbarProxyStyle::MoodbarProxyStyle(Application *app, QSlider *slider, QObject*)
+MoodbarProxyStyle::MoodbarProxyStyle(Application *app, QSlider *slider, QObject *parent)
     : QProxyStyle(nullptr),
       app_(app),
       slider_(slider),
@@ -68,6 +68,8 @@ MoodbarProxyStyle::MoodbarProxyStyle(Application *app, QSlider *slider, QObject*
       show_moodbar_action_(nullptr),
       style_action_group_(nullptr) {
 
+  Q_UNUSED(parent)
+
   slider->setStyle(this);
   slider->installEventFilter(this);
 
diff --git a/src/organize/organizedialog.cpp b/src/organize/organizedialog.cpp
index b16e2e1b1..0daaf76dd 100644
--- a/src/organize/organizedialog.cpp
+++ b/src/organize/organizedialog.cpp
@@ -168,14 +168,18 @@ void OrganizeDialog::SetDestinationModel(QAbstractItemModel *model, const bool d
 
 }
 
-void OrganizeDialog::showEvent(QShowEvent*) {
+void OrganizeDialog::showEvent(QShowEvent *e) {
+
+  Q_UNUSED(e)
 
   LoadGeometry();
   LoadSettings();
 
 }
 
-void OrganizeDialog::closeEvent(QCloseEvent*) {
+void OrganizeDialog::closeEvent(QCloseEvent *e) {
+
+  Q_UNUSED(e)
 
   if (!devices_) SaveGeometry();
 
diff --git a/src/organize/organizedialog.h b/src/organize/organizedialog.h
index 2e13490dd..3f78a72b1 100644
--- a/src/organize/organizedialog.h
+++ b/src/organize/organizedialog.h
@@ -74,8 +74,8 @@ class OrganizeDialog : public QDialog {
   void SetPlaylist(const QString &playlist);
 
  protected:
-  void showEvent(QShowEvent*) override;
-  void closeEvent(QCloseEvent*) override;
+  void showEvent(QShowEvent *e) override;
+  void closeEvent(QCloseEvent *e) override;
 
  private:
   void LoadGeometry();
diff --git a/src/osd/osdbase.cpp b/src/osd/osdbase.cpp
index 61b8d4790..cf5ec3656 100644
--- a/src/osd/osdbase.cpp
+++ b/src/osd/osdbase.cpp
@@ -451,6 +451,13 @@ bool OSDBase::SupportsTrayPopups() {
   return tray_icon_->IsSystemTrayAvailable();
 }
 
-void OSDBase::ShowMessageNative(const QString&, const QString&, const QString&, const QImage&) {
+void OSDBase::ShowMessageNative(const QString &summary, const QString &message, const QString &icon, const QImage &image) {
+
+  Q_UNUSED(summary)
+  Q_UNUSED(message)
+  Q_UNUSED(icon)
+  Q_UNUSED(image)
+
   qLog(Warning) << "Native notifications are not supported on this OS.";
+
 }
diff --git a/src/osd/osdpretty.cpp b/src/osd/osdpretty.cpp
index 9f64d0aab..2387d0faf 100644
--- a/src/osd/osdpretty.cpp
+++ b/src/osd/osdpretty.cpp
@@ -292,7 +292,9 @@ QRect OSDPretty::BoxBorder() const {
   return rect().adjusted(kDropShadowSize, kDropShadowSize, -kDropShadowSize, -kDropShadowSize);
 }
 
-void OSDPretty::paintEvent(QPaintEvent*) {
+void OSDPretty::paintEvent(QPaintEvent *e) {
+
+  Q_UNUSED(e)
 
   QPainter p(this);
   p.setRenderHint(QPainter::Antialiasing);
@@ -461,7 +463,9 @@ void OSDPretty::Reposition() {
 
 }
 
-void OSDPretty::enterEvent(QEnterEvent*) {
+void OSDPretty::enterEvent(QEnterEvent *e) {
+
+  Q_UNUSED(e)
 
   if (mode_ == Mode::Popup) {
     setWindowOpacity(0.25);
@@ -469,8 +473,12 @@ void OSDPretty::enterEvent(QEnterEvent*) {
 
 }
 
-void OSDPretty::leaveEvent(QEvent*) {
+void OSDPretty::leaveEvent(QEvent *e) {
+
+  Q_UNUSED(e)
+
   setWindowOpacity(1.0);
+
 }
 
 void OSDPretty::mousePressEvent(QMouseEvent *e) {
@@ -514,7 +522,9 @@ void OSDPretty::mouseMoveEvent(QMouseEvent *e) {
 
 }
 
-void OSDPretty::mouseReleaseEvent(QMouseEvent *) {
+void OSDPretty::mouseReleaseEvent(QMouseEvent *e) {
+
+  Q_UNUSED(e)
 
   if (current_screen() && mode_ == Mode::Draggable) {
     popup_screen_ = current_screen();
diff --git a/src/playlist/playlist.cpp b/src/playlist/playlist.cpp
index 238d0ebf7..cc2bdeaa8 100644
--- a/src/playlist/playlist.cpp
+++ b/src/playlist/playlist.cpp
@@ -188,7 +188,9 @@ void Playlist::InsertSongItems(const SongList &songs, const int pos, const bool
 
 }
 
-QVariant Playlist::headerData(const int section, Qt::Orientation, const int role) const {
+QVariant Playlist::headerData(const int section, Qt::Orientation orientation, const int role) const {
+
+  Q_UNUSED(orientation)
 
   if (role != Qt::DisplayRole && role != Qt::ToolTipRole) return QVariant();
 
@@ -501,7 +503,8 @@ int Playlist::last_played_row() const {
   return last_played_item_index_.isValid() ? last_played_item_index_.row() : -1;
 }
 
-void Playlist::ShuffleModeChanged(const PlaylistSequence::ShuffleMode) {
+void Playlist::ShuffleModeChanged(const PlaylistSequence::ShuffleMode shuffle_mode) {
+  Q_UNUSED(shuffle_mode)
   ReshuffleIndices();
 }
 
@@ -787,7 +790,10 @@ Qt::DropActions Playlist::supportedDropActions() const {
   return Qt::MoveAction | Qt::CopyAction | Qt::LinkAction;
 }
 
-bool Playlist::dropMimeData(const QMimeData *data, Qt::DropAction action, const int row, int, const QModelIndex&) {
+bool Playlist::dropMimeData(const QMimeData *data, Qt::DropAction action, const int row, const int column, const QModelIndex &parent_index) {
+
+  Q_UNUSED(column)
+  Q_UNUSED(parent_index)
 
   if (action == Qt::IgnoreAction) return false;
 
@@ -2060,7 +2066,9 @@ PlaylistItemPtrList Playlist::collection_items_by_id(const int id) const {
   return collection_items_by_id_.values(id);
 }
 
-void Playlist::TracksAboutToBeDequeued(const QModelIndex&, const int begin, const int end) {
+void Playlist::TracksAboutToBeDequeued(const QModelIndex &idx, const int begin, const int end) {
+
+  Q_UNUSED(idx)
 
   for (int i = begin; i <= end; ++i) {
     temp_dequeue_change_indexes_ << queue_->mapToSource(queue_->index(i, static_cast<int>(Column::Title)));
@@ -2078,7 +2086,9 @@ void Playlist::TracksDequeued() {
 
 }
 
-void Playlist::TracksEnqueued(const QModelIndex&, const int begin, const int end) {
+void Playlist::TracksEnqueued(const QModelIndex &parent_idx, const int begin, const int end) {
+
+  Q_UNUSED(parent_idx)
 
   const QModelIndex &b = queue_->mapToSource(queue_->index(begin, static_cast<int>(Column::Title)));
   const QModelIndex &e = queue_->mapToSource(queue_->index(end, static_cast<int>(Column::Title)));
diff --git a/src/playlist/playlist.h b/src/playlist/playlist.h
index 3009bb688..8595a6754 100644
--- a/src/playlist/playlist.h
+++ b/src/playlist/playlist.h
@@ -255,7 +255,7 @@ class Playlist : public QAbstractListModel {
   QStringList mimeTypes() const override;
   Qt::DropActions supportedDropActions() const override;
   QMimeData *mimeData(const QModelIndexList &indexes) const override;
-  bool dropMimeData(const QMimeData *data, Qt::DropAction action, const int row, const int column, const QModelIndex &parent) override;
+  bool dropMimeData(const QMimeData *data, Qt::DropAction action, const int row, const int column, const QModelIndex &parent_index) override;
   void sort(const int column_number, const Qt::SortOrder order) override;
   bool removeRows(const int row, const int count, const QModelIndex &parent = QModelIndex()) override;
 
@@ -288,7 +288,7 @@ class Playlist : public QAbstractListModel {
   void RemoveUnavailableSongs();
   void Shuffle();
 
-  void ShuffleModeChanged(const PlaylistSequence::ShuffleMode);
+  void ShuffleModeChanged(const PlaylistSequence::ShuffleMode shuffle_mode);
 
   void SetColumnAlignment(const ColumnAlignmentMap &alignment);
 
@@ -348,7 +348,7 @@ class Playlist : public QAbstractListModel {
  private Q_SLOTS:
   void TracksAboutToBeDequeued(const QModelIndex&, const int begin, const int end);
   void TracksDequeued();
-  void TracksEnqueued(const QModelIndex&, const int begin, const int end);
+  void TracksEnqueued(const QModelIndex &parent_idx, const int begin, const int end);
   void QueueLayoutChanged();
   void SongSaveComplete(TagReaderReply *reply, const QPersistentModelIndex &idx, const Song &old_metadata);
   void ItemReloadComplete(const QPersistentModelIndex &idx, const Song &old_metadata, const bool metadata_edit);
diff --git a/src/playlist/playlistdelegates.cpp b/src/playlist/playlistdelegates.cpp
index e96f1ea75..10b1f98b1 100644
--- a/src/playlist/playlistdelegates.cpp
+++ b/src/playlist/playlistdelegates.cpp
@@ -170,7 +170,9 @@ PlaylistDelegateBase::PlaylistDelegateBase(QObject *parent, const QString &suffi
 {
 }
 
-QString PlaylistDelegateBase::displayText(const QVariant &value, const QLocale&) const {
+QString PlaylistDelegateBase::displayText(const QVariant &value, const QLocale &locale) const {
+
+  Q_UNUSED(locale)
 
   QString text;
 
@@ -297,7 +299,9 @@ bool PlaylistDelegateBase::helpEvent(QHelpEvent *event, QAbstractItemView *view,
 }
 
 
-QString LengthItemDelegate::displayText(const QVariant &value, const QLocale&) const {
+QString LengthItemDelegate::displayText(const QVariant &value, const QLocale &locale) const {
+
+  Q_UNUSED(locale)
 
   bool ok = false;
   qint64 nanoseconds = value.toLongLong(&ok);
@@ -308,7 +312,9 @@ QString LengthItemDelegate::displayText(const QVariant &value, const QLocale&) c
 }
 
 
-QString SizeItemDelegate::displayText(const QVariant &value, const QLocale&) const {
+QString SizeItemDelegate::displayText(const QVariant &value, const QLocale &locale) const {
+
+  Q_UNUSED(locale)
 
   bool ok = false;
   qint64 bytes = value.toLongLong(&ok);
@@ -425,7 +431,10 @@ void TagCompleter::ModelReady() {
 
 }
 
-QWidget *TagCompletionItemDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem&, const QModelIndex&) const {
+QWidget *TagCompletionItemDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &idx) const {
+
+  Q_UNUSED(option)
+  Q_UNUSED(idx)
 
   QLineEdit *editor = new QLineEdit(parent);
   new TagCompleter(backend_, column_, editor);
@@ -434,7 +443,9 @@ QWidget *TagCompletionItemDelegate::createEditor(QWidget *parent, const QStyleOp
 
 }
 
-QString NativeSeparatorsDelegate::displayText(const QVariant &value, const QLocale&) const {
+QString NativeSeparatorsDelegate::displayText(const QVariant &value, const QLocale &locale) const {
+
+  Q_UNUSED(locale)
 
   const QString string_value = value.toString();
 
@@ -458,8 +469,9 @@ QString NativeSeparatorsDelegate::displayText(const QVariant &value, const QLoca
 
 SongSourceDelegate::SongSourceDelegate(QObject *parent) : PlaylistDelegateBase(parent) {}
 
-QString SongSourceDelegate::displayText(const QVariant &value, const QLocale&) const {
+QString SongSourceDelegate::displayText(const QVariant &value, const QLocale &locale) const {
   Q_UNUSED(value);
+  Q_UNUSED(locale)
   return QString();
 }
 
@@ -522,7 +534,9 @@ QSize RatingItemDelegate::sizeHint(const QStyleOptionViewItem &option, const QMo
 
 }
 
-QString RatingItemDelegate::displayText(const QVariant &value, const QLocale&) const {
+QString RatingItemDelegate::displayText(const QVariant &value, const QLocale &locale) const {
+
+  Q_UNUSED(locale)
 
   if (value.isNull() || value.toFloat() <= 0) return QString();
 
@@ -533,7 +547,9 @@ QString RatingItemDelegate::displayText(const QVariant &value, const QLocale&) c
 
 }
 
-QString Ebur128LoudnessLUFSItemDelegate::displayText(const QVariant &value, const QLocale&) const {
+QString Ebur128LoudnessLUFSItemDelegate::displayText(const QVariant &value, const QLocale &locale) const {
+
+  Q_UNUSED(locale)
 
   bool ok = false;
   double v = value.toDouble(&ok);
@@ -543,7 +559,9 @@ QString Ebur128LoudnessLUFSItemDelegate::displayText(const QVariant &value, cons
 
 }
 
-QString Ebur128LoudnessRangeLUItemDelegate::displayText(const QVariant &value, const QLocale&) const {
+QString Ebur128LoudnessRangeLUItemDelegate::displayText(const QVariant &value, const QLocale &locale) const {
+
+  Q_UNUSED(locale)
 
   bool ok = false;
   double v = value.toDouble(&ok);
diff --git a/src/playlist/playlistheader.cpp b/src/playlist/playlistheader.cpp
index c4ea58a33..82dac43e0 100644
--- a/src/playlist/playlistheader.cpp
+++ b/src/playlist/playlistheader.cpp
@@ -164,7 +164,8 @@ void PlaylistHeader::ToggleVisible(const int section) {
   Q_EMIT SectionVisibilityChanged(section, !isSectionHidden(section));
 }
 
-void PlaylistHeader::enterEvent(QEnterEvent*) {
+void PlaylistHeader::enterEvent(QEnterEvent *e) {
+  Q_UNUSED(e)
   Q_EMIT MouseEntered();
 }
 
diff --git a/src/playlist/playlistlistview.cpp b/src/playlist/playlistlistview.cpp
index 4d674e9b1..9ab1b80ae 100644
--- a/src/playlist/playlistlistview.cpp
+++ b/src/playlist/playlistlistview.cpp
@@ -70,8 +70,13 @@ bool PlaylistListView::ItemsSelected() const {
   return selectionModel()->selectedRows().count() > 0;
 }
 
-void PlaylistListView::selectionChanged(const QItemSelection&, const QItemSelection&) {
+void PlaylistListView::selectionChanged(const QItemSelection &selected, const QItemSelection &deselected) {
+
+  Q_UNUSED(selected)
+  Q_UNUSED(deselected)
+
   Q_EMIT ItemsSelectedChanged(selectionModel()->selectedRows().count() > 0);
+
 }
 
 void PlaylistListView::dragEnterEvent(QDragEnterEvent *e) {
diff --git a/src/playlist/playlisttabbar.cpp b/src/playlist/playlisttabbar.cpp
index 3c1656cbc..1640da5c8 100644
--- a/src/playlist/playlisttabbar.cpp
+++ b/src/playlist/playlisttabbar.cpp
@@ -408,7 +408,8 @@ void PlaylistTabBar::dragMoveEvent(QDragMoveEvent *e) {
 
 }
 
-void PlaylistTabBar::dragLeaveEvent(QDragLeaveEvent*) {
+void PlaylistTabBar::dragLeaveEvent(QDragLeaveEvent *e) {
+  Q_UNUSED(e)
   drag_hover_timer_.stop();
 }
 
diff --git a/src/playlistparsers/asxparser.cpp b/src/playlistparsers/asxparser.cpp
index 8b93f803b..f18f1d04a 100644
--- a/src/playlistparsers/asxparser.cpp
+++ b/src/playlistparsers/asxparser.cpp
@@ -133,7 +133,10 @@ return_song:
 
 }
 
-void ASXParser::Save(const SongList &songs, QIODevice *device, const QDir&, const PlaylistSettingsPage::PathType) const {
+void ASXParser::Save(const SongList &songs, QIODevice *device, const QDir &dir, const PlaylistSettingsPage::PathType path_type) const {
+
+  Q_UNUSED(dir)
+  Q_UNUSED(path_type)
 
   QXmlStreamWriter writer(device);
   writer.setAutoFormatting(true);
diff --git a/src/queue/queue.cpp b/src/queue/queue.cpp
index ad5bbfc57..0fbb67b56 100644
--- a/src/queue/queue.cpp
+++ b/src/queue/queue.cpp
@@ -148,7 +148,10 @@ int Queue::rowCount(const QModelIndex &parent) const {
   return static_cast<int>(source_indexes_.count());
 }
 
-int Queue::columnCount(const QModelIndex&) const { return 1; }
+int Queue::columnCount(const QModelIndex &parent) const {
+  Q_UNUSED(parent)
+  return 1;
+}
 
 QVariant Queue::data(const QModelIndex &proxy_index, int role) const {
 
@@ -356,7 +359,10 @@ QMimeData *Queue::mimeData(const QModelIndexList &indexes) const {
 
 }
 
-bool Queue::dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int, const QModelIndex&) {
+bool Queue::dropMimeData(const QMimeData *data, Qt::DropAction action, const int row, const int column, const QModelIndex &parent_index) {
+
+  Q_UNUSED(column)
+  Q_UNUSED(parent_index)
 
   if (action == Qt::IgnoreAction)
     return false;
diff --git a/src/queue/queue.h b/src/queue/queue.h
index b75977c37..ca8b49885 100644
--- a/src/queue/queue.h
+++ b/src/queue/queue.h
@@ -74,7 +74,7 @@ class Queue : public QAbstractProxyModel {
   QStringList mimeTypes() const override;
   Qt::DropActions supportedDropActions() const override;
   QMimeData *mimeData(const QModelIndexList &indexes) const override;
-  bool dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) override;
+  bool dropMimeData(const QMimeData *data, Qt::DropAction action, const int row, const int column, const QModelIndex &parent_index) override;
   Qt::ItemFlags flags(const QModelIndex &idx) const override;
 
  public Q_SLOTS:
diff --git a/src/radios/radioview.cpp b/src/radios/radioview.cpp
index 816f9c82b..90cfb00b6 100644
--- a/src/radios/radioview.cpp
+++ b/src/radios/radioview.cpp
@@ -54,7 +54,9 @@ RadioView::RadioView(QWidget *parent)
 
 RadioView::~RadioView() { delete menu_; }
 
-void RadioView::showEvent(QShowEvent*) {
+void RadioView::showEvent(QShowEvent *e) {
+
+  Q_UNUSED(e)
 
   if (!initialized_) {
     Q_EMIT GetChannels();
diff --git a/src/settings/notificationssettingspage.cpp b/src/settings/notificationssettingspage.cpp
index cafedbf21..79992025f 100644
--- a/src/settings/notificationssettingspage.cpp
+++ b/src/settings/notificationssettingspage.cpp
@@ -142,11 +142,13 @@ NotificationsSettingsPage::~NotificationsSettingsPage() {
   delete ui_;
 }
 
-void NotificationsSettingsPage::showEvent(QShowEvent*) {
+void NotificationsSettingsPage::showEvent(QShowEvent *e) {
+  Q_UNUSED(e)
   UpdatePopupVisible();
 }
 
-void NotificationsSettingsPage::hideEvent(QHideEvent*) {
+void NotificationsSettingsPage::hideEvent(QHideEvent *e) {
+  Q_UNUSED(e)
   UpdatePopupVisible();
 }
 
diff --git a/src/settings/settingsdialog.cpp b/src/settings/settingsdialog.cpp
index c690e5d8e..95f53de53 100644
--- a/src/settings/settingsdialog.cpp
+++ b/src/settings/settingsdialog.cpp
@@ -209,7 +209,9 @@ void SettingsDialog::showEvent(QShowEvent *e) {
 
 }
 
-void SettingsDialog::closeEvent(QCloseEvent*) {
+void SettingsDialog::closeEvent(QCloseEvent *e) {
+
+  Q_UNUSED(e)
 
   SaveGeometry();
 
diff --git a/src/smartplaylists/smartplaylistsearchtermwidgetoverlay.cpp b/src/smartplaylists/smartplaylistsearchtermwidgetoverlay.cpp
index 3303bb84c..732124534 100644
--- a/src/smartplaylists/smartplaylistsearchtermwidgetoverlay.cpp
+++ b/src/smartplaylists/smartplaylistsearchtermwidgetoverlay.cpp
@@ -80,7 +80,9 @@ void SmartPlaylistSearchTermWidgetOverlay::SetOpacity(const float opacity) {
 
 }
 
-void SmartPlaylistSearchTermWidgetOverlay::paintEvent(QPaintEvent*) {
+void SmartPlaylistSearchTermWidgetOverlay::paintEvent(QPaintEvent *e) {
+
+  Q_UNUSED(e)
 
   QPainter p(this);
 
diff --git a/src/smartplaylists/smartplaylistsview.cpp b/src/smartplaylists/smartplaylistsview.cpp
index a2070fc63..24f818f56 100644
--- a/src/smartplaylists/smartplaylistsview.cpp
+++ b/src/smartplaylists/smartplaylistsview.cpp
@@ -39,7 +39,9 @@ SmartPlaylistsView::SmartPlaylistsView(QWidget *_parent) : QListView(_parent) {
 
 SmartPlaylistsView::~SmartPlaylistsView() = default;
 
-void SmartPlaylistsView::selectionChanged(const QItemSelection&, const QItemSelection&) {
+void SmartPlaylistsView::selectionChanged(const QItemSelection &selected, const QItemSelection &deselected) {
+  Q_UNUSED(selected)
+  Q_UNUSED(deselected)
   Q_EMIT ItemsSelectedChanged();
 }
 
diff --git a/src/smartplaylists/smartplaylistsview.h b/src/smartplaylists/smartplaylistsview.h
index c543b5e62..cc60901c5 100644
--- a/src/smartplaylists/smartplaylistsview.h
+++ b/src/smartplaylists/smartplaylistsview.h
@@ -35,7 +35,7 @@ class SmartPlaylistsView : public QListView {
   ~SmartPlaylistsView();
 
  protected:
-  void selectionChanged(const QItemSelection&, const QItemSelection&) override;
+  void selectionChanged(const QItemSelection &selected, const QItemSelection &deselected) override;
   void contextMenuEvent(QContextMenuEvent *e) override;
 
  Q_SIGNALS:
diff --git a/src/streaming/streamingsearchview.cpp b/src/streaming/streamingsearchview.cpp
index 7b006daf1..c17d8d103 100644
--- a/src/streaming/streamingsearchview.cpp
+++ b/src/streaming/streamingsearchview.cpp
@@ -732,15 +732,18 @@ void StreamingSearchView::SetGroupBy(const CollectionModel::Grouping g) {
 
 }
 
-void StreamingSearchView::SearchArtistsClicked(const bool) {
+void StreamingSearchView::SearchArtistsClicked(const bool checked) {
+  Q_UNUSED(checked)
   SetSearchType(StreamingSearchView::SearchType::Artists);
 }
 
-void StreamingSearchView::SearchAlbumsClicked(const bool) {
+void StreamingSearchView::SearchAlbumsClicked(const bool checked) {
+  Q_UNUSED(checked)
   SetSearchType(StreamingSearchView::SearchType::Albums);
 }
 
-void StreamingSearchView::SearchSongsClicked(const bool) {
+void StreamingSearchView::SearchSongsClicked(const bool checked) {
+  Q_UNUSED(checked)
   SetSearchType(StreamingSearchView::SearchType::Songs);
 }
 
diff --git a/src/streaming/streamingsearchview.h b/src/streaming/streamingsearchview.h
index fa954bc38..d4f77d62a 100644
--- a/src/streaming/streamingsearchview.h
+++ b/src/streaming/streamingsearchview.h
@@ -165,9 +165,9 @@ class StreamingSearchView : public QWidget {
   void SearchForThis();
   void OpenSettingsDialog();
 
-  void SearchArtistsClicked(const bool);
-  void SearchAlbumsClicked(const bool);
-  void SearchSongsClicked(const bool);
+  void SearchArtistsClicked(const bool checked);
+  void SearchAlbumsClicked(const bool checked);
+  void SearchSongsClicked(const bool checked);
   void GroupByClicked(QAction *action);
   void SetGroupBy(const CollectionModel::Grouping g);
 
diff --git a/src/transcoder/transcoder.cpp b/src/transcoder/transcoder.cpp
index 3b55fcef9..561b59694 100644
--- a/src/transcoder/transcoder.cpp
+++ b/src/transcoder/transcoder.cpp
@@ -350,7 +350,9 @@ Transcoder::StartJobStatus Transcoder::MaybeStartNextJob() {
 
 }
 
-void Transcoder::NewPadCallback(GstElement*, GstPad *pad, gpointer data) {
+void Transcoder::NewPadCallback(GstElement *element, GstPad *pad, gpointer data) {
+
+  Q_UNUSED(element)
 
   JobState *state = reinterpret_cast<JobState*>(data);
   GstPad *const audiopad = gst_element_get_static_pad(state->convert_element_, "sink");
@@ -365,7 +367,9 @@ void Transcoder::NewPadCallback(GstElement*, GstPad *pad, gpointer data) {
 
 }
 
-GstBusSyncReply Transcoder::BusCallbackSync(GstBus*, GstMessage *msg, gpointer data) {
+GstBusSyncReply Transcoder::BusCallbackSync(GstBus *bus, GstMessage *msg, gpointer data) {
+
+  Q_UNUSED(bus)
 
   JobState *state = reinterpret_cast<JobState*>(data);
   switch (GST_MESSAGE_TYPE(msg)) {
diff --git a/src/transcoder/transcoder.h b/src/transcoder/transcoder.h
index 31123718d..0d12cbd75 100644
--- a/src/transcoder/transcoder.h
+++ b/src/transcoder/transcoder.h
@@ -138,8 +138,8 @@ class Transcoder : public QObject {
   GstElement *CreateElementForMimeType(GstElementFactoryListType element_type, const QString &mime_type, GstElement *bin = nullptr);
   void SetElementProperties(const QString &name, GObject *object);
 
-  static void NewPadCallback(GstElement*, GstPad *pad, gpointer data);
-  static GstBusSyncReply BusCallbackSync(GstBus*, GstMessage *msg, gpointer data);
+  static void NewPadCallback(GstElement *element, GstPad *pad, gpointer data);
+  static GstBusSyncReply BusCallbackSync(GstBus *bus, GstMessage *msg, gpointer data);
 
  private:
   using JobStateList = QList<SharedPtr<JobState>>;
diff --git a/src/widgets/busyindicator.cpp b/src/widgets/busyindicator.cpp
index 23ea3f161..e896fd973 100644
--- a/src/widgets/busyindicator.cpp
+++ b/src/widgets/busyindicator.cpp
@@ -72,11 +72,13 @@ BusyIndicator::~BusyIndicator() {
   delete movie_;
 }
 
-void BusyIndicator::showEvent(QShowEvent*) {
+void BusyIndicator::showEvent(QShowEvent *e) {
+  Q_UNUSED(e)
   movie_->start();
 }
 
-void BusyIndicator::hideEvent(QHideEvent*) {
+void BusyIndicator::hideEvent(QHideEvent *e) {
+  Q_UNUSED(e)
   movie_->stop();
 }
 
diff --git a/src/widgets/busyindicator.h b/src/widgets/busyindicator.h
index 8e7007fe3..7e954e4ac 100644
--- a/src/widgets/busyindicator.h
+++ b/src/widgets/busyindicator.h
@@ -44,8 +44,8 @@ class BusyIndicator : public QWidget {
   void set_text(const QString &text);
 
  protected:
-  void showEvent(QShowEvent *event) override;
-  void hideEvent(QHideEvent *event) override;
+  void showEvent(QShowEvent *e) override;
+  void hideEvent(QHideEvent *e) override;
 
  private:
   void Init(const QString &text);
diff --git a/src/widgets/fancytabwidget.cpp b/src/widgets/fancytabwidget.cpp
index f5296196a..e208411c0 100644
--- a/src/widgets/fancytabwidget.cpp
+++ b/src/widgets/fancytabwidget.cpp
@@ -77,7 +77,7 @@ FancyTabWidget::FancyTabWidget(QWidget *parent)
 
 }
 
-FancyTabWidget::~FancyTabWidget() {}
+FancyTabWidget::~FancyTabWidget() = default;
 
 void FancyTabWidget::AddTab(QWidget *widget_view, const QString &name, const QIcon &icon, const QString &label) {
 
diff --git a/src/widgets/favoritewidget.cpp b/src/widgets/favoritewidget.cpp
index 8c5508bed..3dece562f 100644
--- a/src/widgets/favoritewidget.cpp
+++ b/src/widgets/favoritewidget.cpp
@@ -72,7 +72,9 @@ void FavoriteWidget::paintEvent(QPaintEvent *e) {
 
 }
 
-void FavoriteWidget::mouseDoubleClickEvent(QMouseEvent*) {
+void FavoriteWidget::mouseDoubleClickEvent(QMouseEvent *e) {
+
+  Q_UNUSED(e)
 
   favorite_ = !favorite_;
   update();
diff --git a/src/widgets/favoritewidget.h b/src/widgets/favoritewidget.h
index eb4318730..eb84d34ed 100644
--- a/src/widgets/favoritewidget.h
+++ b/src/widgets/favoritewidget.h
@@ -48,7 +48,7 @@ class FavoriteWidget : public QWidget {
 
  protected:
   void paintEvent(QPaintEvent *e) override;
-  void mouseDoubleClickEvent(QMouseEvent*) override;
+  void mouseDoubleClickEvent(QMouseEvent *e) override;
 
  private:
   // The playlist's id this widget belongs to
diff --git a/src/widgets/freespacebar.cpp b/src/widgets/freespacebar.cpp
index a7f720ef7..aa95b021c 100644
--- a/src/widgets/freespacebar.cpp
+++ b/src/widgets/freespacebar.cpp
@@ -80,7 +80,9 @@ QSize FreeSpaceBar::sizeHint() const {
   return QSize(150, kBarHeight + kLabelBoxPadding + fontMetrics().height());
 }
 
-void FreeSpaceBar::paintEvent(QPaintEvent*) {
+void FreeSpaceBar::paintEvent(QPaintEvent *e) {
+
+  Q_UNUSED(e)
 
   // Geometry
   QRect bar_rect(rect());
diff --git a/src/widgets/freespacebar.h b/src/widgets/freespacebar.h
index 8d85a8d2b..cfc9a97f3 100644
--- a/src/widgets/freespacebar.h
+++ b/src/widgets/freespacebar.h
@@ -50,7 +50,7 @@ class FreeSpaceBar : public QWidget {
   QSize sizeHint() const override;
 
  protected:
-  void paintEvent(QPaintEvent*) override;
+  void paintEvent(QPaintEvent *e) override;
 
  private:
   struct Label {
diff --git a/src/widgets/groupediconview.cpp b/src/widgets/groupediconview.cpp
index 8d669a401..6ef5282fd 100644
--- a/src/widgets/groupediconview.cpp
+++ b/src/widgets/groupediconview.cpp
@@ -132,9 +132,13 @@ void GroupedIconView::rowsInserted(const QModelIndex &parent, int start, int end
   LayoutItems();
 }
 
-void GroupedIconView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight, const QList<int>&) {
-  QListView::dataChanged(topLeft, bottomRight);
+void GroupedIconView::dataChanged(const QModelIndex &top_left, const QModelIndex &bottom_right, const QList<int> &roles) {
+
+  Q_UNUSED(roles)
+
+  QListView::dataChanged(top_left, bottom_right);
   LayoutItems();
+
 }
 
 void GroupedIconView::LayoutItems() {
@@ -363,7 +367,9 @@ QRegion GroupedIconView::visualRegionForSelection(const QItemSelection &selectio
 
 }
 
-QModelIndex GroupedIconView::moveCursor(CursorAction action, Qt::KeyboardModifiers) {
+QModelIndex GroupedIconView::moveCursor(CursorAction action, const Qt::KeyboardModifiers keyboard_modifiers) {
+
+  Q_UNUSED(keyboard_modifiers)
 
   if (model()->rowCount() == 0) {
     return QModelIndex();
diff --git a/src/widgets/groupediconview.h b/src/widgets/groupediconview.h
index c1f117dc3..66e9530c1 100644
--- a/src/widgets/groupediconview.h
+++ b/src/widgets/groupediconview.h
@@ -76,7 +76,7 @@ class GroupedIconView : public QListView {
   void set_header_text(const QString &value) { header_text_ = value; }
 
   // QAbstractItemView
-  QModelIndex moveCursor(CursorAction action, Qt::KeyboardModifiers modifiers) override;
+  QModelIndex moveCursor(CursorAction action, const Qt::KeyboardModifiers keyboard_modifiers) override;
   void setModel(QAbstractItemModel *model) override;
 
   static void DrawHeader(QPainter *painter, const QRect rect, const QFont &font, const QPalette &palette, const QString &text);
@@ -89,7 +89,7 @@ class GroupedIconView : public QListView {
   void resizeEvent(QResizeEvent *e) override;
 
   // QAbstractItemView
-  void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight, const QList<int>& = QList<int>()) override;
+  void dataChanged(const QModelIndex &top_left, const QModelIndex &bottom_right, const QList<int> &roles = QList<int>()) override;
   QModelIndex indexAt(const QPoint &p) const override;
   void rowsInserted(const QModelIndex &parent, int start, int end) override;
   void setSelection(const QRect &rect, QItemSelectionModel::SelectionFlags command) override;
diff --git a/src/widgets/multiloadingindicator.cpp b/src/widgets/multiloadingindicator.cpp
index 5c6db849e..daec78e72 100644
--- a/src/widgets/multiloadingindicator.cpp
+++ b/src/widgets/multiloadingindicator.cpp
@@ -98,7 +98,9 @@ void MultiLoadingIndicator::UpdateText() {
 
 }
 
-void MultiLoadingIndicator::paintEvent(QPaintEvent*) {
+void MultiLoadingIndicator::paintEvent(QPaintEvent *e) {
+
+  Q_UNUSED(e)
 
   QPainter p(this);
 
diff --git a/src/widgets/multiloadingindicator.h b/src/widgets/multiloadingindicator.h
index 04026cb99..bb14b2ba4 100644
--- a/src/widgets/multiloadingindicator.h
+++ b/src/widgets/multiloadingindicator.h
@@ -47,7 +47,7 @@ class MultiLoadingIndicator : public QWidget {
   void TaskCountChange(const int tasks);
 
  protected:
-  void paintEvent(QPaintEvent*) override;
+  void paintEvent(QPaintEvent *e) override;
 
  private Q_SLOTS:
   void UpdateText();
diff --git a/src/widgets/ratingwidget.cpp b/src/widgets/ratingwidget.cpp
index e773071fa..48c282ade 100644
--- a/src/widgets/ratingwidget.cpp
+++ b/src/widgets/ratingwidget.cpp
@@ -128,7 +128,9 @@ void RatingWidget::set_rating(const float rating) {
 
 }
 
-void RatingWidget::paintEvent(QPaintEvent*) {
+void RatingWidget::paintEvent(QPaintEvent *e) {
+
+  Q_UNUSED(e)
 
   QStylePainter p(this);
 
@@ -161,7 +163,9 @@ void RatingWidget::mouseMoveEvent(QMouseEvent *e) {
 
 }
 
-void RatingWidget::leaveEvent(QEvent*) {
+void RatingWidget::leaveEvent(QEvent *e) {
+
+  Q_UNUSED(e)
 
   hover_rating_ = -1.0;
   update();
diff --git a/src/widgets/ratingwidget.h b/src/widgets/ratingwidget.h
index 3488ee376..3788153e2 100644
--- a/src/widgets/ratingwidget.h
+++ b/src/widgets/ratingwidget.h
@@ -62,7 +62,7 @@ class RatingWidget : public QWidget {
   void paintEvent(QPaintEvent*) override;
   void mousePressEvent(QMouseEvent *e) override;
   void mouseMoveEvent(QMouseEvent *e) override;
-  void leaveEvent(QEvent*) override;
+  void leaveEvent(QEvent *e) override;
 
  private:
   RatingPainter painter_;
diff --git a/src/widgets/sliderslider.cpp b/src/widgets/sliderslider.cpp
index 0ac07dac7..6dd357683 100644
--- a/src/widgets/sliderslider.cpp
+++ b/src/widgets/sliderslider.cpp
@@ -121,7 +121,9 @@ void SliderSlider::mousePressEvent(QMouseEvent *e) {
 
 }
 
-void SliderSlider::mouseReleaseEvent(QMouseEvent*) {
+void SliderSlider::mouseReleaseEvent(QMouseEvent *e) {
+
+  Q_UNUSED(e)
 
   if (!outside_ && QSlider::value() != prev_value_) {
     Q_EMIT SliderReleased(value());
diff --git a/src/widgets/stretchheaderview.h b/src/widgets/stretchheaderview.h
index a4f04081d..c130162c7 100644
--- a/src/widgets/stretchheaderview.h
+++ b/src/widgets/stretchheaderview.h
@@ -47,7 +47,7 @@ class StretchHeaderView : public QHeaderView {
 
   // Serialises the proportional and actual column widths.
   // Use these instead of QHeaderView::restoreState and QHeaderView::saveState to persist the proportional values directly and avoid floating point errors over time.
-  bool RestoreState(const QByteArray &sdata);
+  bool RestoreState(const QByteArray &state);
   QByteArray SaveState() const;
   QByteArray ResetState();
 
diff --git a/src/widgets/tracksliderpopup.cpp b/src/widgets/tracksliderpopup.cpp
index 4b5c5141c..7e154be0a 100644
--- a/src/widgets/tracksliderpopup.cpp
+++ b/src/widgets/tracksliderpopup.cpp
@@ -75,7 +75,8 @@ void TrackSliderPopup::SetPopupPosition(const QPoint pos) {
   UpdatePosition();
 }
 
-void TrackSliderPopup::paintEvent(QPaintEvent*) {
+void TrackSliderPopup::paintEvent(QPaintEvent *e) {
+  Q_UNUSED(e)
   QPainter p(this);
   p.drawPixmap(0, 0, pixmap_);
 }
diff --git a/src/widgets/volumeslider.cpp b/src/widgets/volumeslider.cpp
index 2b0ccaec8..9583c1775 100644
--- a/src/widgets/volumeslider.cpp
+++ b/src/widgets/volumeslider.cpp
@@ -94,7 +94,9 @@ void VolumeSlider::HandleWheel(const int delta) {
 
 }
 
-void VolumeSlider::paintEvent(QPaintEvent*) {
+void VolumeSlider::paintEvent(QPaintEvent *e) {
+
+  Q_UNUSED(e)
 
   QPainter p(this);
 
@@ -162,7 +164,8 @@ void VolumeSlider::slotAnimTimer() {
 
 }
 
-void VolumeSlider::paletteChange(const QPalette&) {
+void VolumeSlider::paletteChange(const QPalette &palette) {
+  Q_UNUSED(palette)
   generateGradient();
 }
 
@@ -229,7 +232,9 @@ void VolumeSlider::drawVolumeSliderHandle() {
 
 }
 
-void VolumeSlider::enterEvent(QEnterEvent*) {
+void VolumeSlider::enterEvent(QEnterEvent *e) {
+
+  Q_UNUSED(e)
 
   anim_enter_ = true;
   anim_count_ = 0;
@@ -238,7 +243,9 @@ void VolumeSlider::enterEvent(QEnterEvent*) {
 
 }
 
-void VolumeSlider::leaveEvent(QEvent*) {
+void VolumeSlider::leaveEvent(QEvent *e) {
+
+  Q_UNUSED(e)
 
   // This can happen if you enter and leave the widget quickly
   if (anim_count_ == 0) anim_count_ = 1;
diff --git a/src/widgets/volumeslider.h b/src/widgets/volumeslider.h
index 2eaebbebd..022ccf564 100644
--- a/src/widgets/volumeslider.h
+++ b/src/widgets/volumeslider.h
@@ -48,12 +48,12 @@ class VolumeSlider : public SliderSlider {
   void HandleWheel(const int delta);
 
  protected:
-  void enterEvent(QEnterEvent*) override;
-  void leaveEvent(QEvent*) override;
-  void paintEvent(QPaintEvent*) override;
-  virtual void paletteChange(const QPalette&);
-  void slideEvent(QMouseEvent*) override;
-  void contextMenuEvent(QContextMenuEvent*) override;
+  void enterEvent(QEnterEvent *e) override;
+  void leaveEvent(QEvent *e) override;
+  void paintEvent(QPaintEvent *e) override;
+  virtual void paletteChange(const QPalette &palette);
+  void slideEvent(QMouseEvent *e) override;
+  void contextMenuEvent(QContextMenuEvent *e) override;
   void mousePressEvent(QMouseEvent*) override;
   void wheelEvent(QWheelEvent *e) override;