diff --git a/src/core/song.cpp b/src/core/song.cpp
index 2d9a1718f..1670b8351 100644
--- a/src/core/song.cpp
+++ b/src/core/song.cpp
@@ -1500,7 +1500,11 @@ bool Song::operator!=(const Song &other) const {
   return source() != other.source() || url() != other.url() || beginning_nanosec() != other.beginning_nanosec();
 }
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+size_t qHash(const Song &song) {
+#else
 uint qHash(const Song &song) {
+#endif
   // Should compare the same fields as operator==
   return qHash(song.url().toString()) ^ qHash(song.beginning_nanosec());
 }
diff --git a/src/core/song.h b/src/core/song.h
index d474ffcf4..22028300a 100644
--- a/src/core/song.h
+++ b/src/core/song.h
@@ -378,7 +378,11 @@ Q_DECLARE_METATYPE(Song)
 typedef QList<Song> SongList;
 Q_DECLARE_METATYPE(QList<Song>)
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+size_t qHash(const Song &song);
+#else
 uint qHash(const Song &song);
+#endif
 // Hash function using field checked in IsSimilar function
 uint HashSimilar(const Song &song);
 
diff --git a/src/device/macosdevicelister.h b/src/device/macosdevicelister.h
index a9fcbeae3..cc98f2f00 100644
--- a/src/device/macosdevicelister.h
+++ b/src/device/macosdevicelister.h
@@ -109,7 +109,11 @@ class MacOsDeviceLister : public DeviceLister {
   static QSet<MTPDevice> sMTPDeviceList;
 };
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+size_t qHash(const MacOsDeviceLister::MTPDevice& device);
+#else
 uint qHash(const MacOsDeviceLister::MTPDevice& device);
+#endif
 inline bool operator==(const MacOsDeviceLister::MTPDevice& a, const MacOsDeviceLister::MTPDevice& b) {
   return (a.vendor_id == b.vendor_id) && (a.product_id == b.product_id);
 }
diff --git a/src/device/macosdevicelister.mm b/src/device/macosdevicelister.mm
index 07d522063..9627f3944 100644
--- a/src/device/macosdevicelister.mm
+++ b/src/device/macosdevicelister.mm
@@ -100,7 +100,11 @@ class ScopedIOObject {
 
 QSet<MacOsDeviceLister::MTPDevice> MacOsDeviceLister::sMTPDeviceList;
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+size_t qHash(const MacOsDeviceLister::MTPDevice& d) {
+#else
 uint qHash(const MacOsDeviceLister::MTPDevice& d) {
+#endif
   return qHash(d.vendor_id) ^ qHash(d.product_id);
 }
 
diff --git a/src/internet/internetsearchmodel.h b/src/internet/internetsearchmodel.h
index 6a6fdac7f..9cc012b35 100644
--- a/src/internet/internetsearchmodel.h
+++ b/src/internet/internetsearchmodel.h
@@ -96,7 +96,11 @@ class InternetSearchModel : public QStandardItemModel {
 
 };
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+inline size_t qHash(const InternetSearchModel::ContainerKey &key) {
+#else
 inline uint qHash(const InternetSearchModel::ContainerKey &key) {
+#endif
   return qHash(key.group_[0]) ^ qHash(key.group_[1]) ^ qHash(key.group_[2]);
 }
 
diff --git a/src/musicbrainz/musicbrainzclient.h b/src/musicbrainz/musicbrainzclient.h
index cac4bc16c..8320837ce 100644
--- a/src/musicbrainz/musicbrainzclient.h
+++ b/src/musicbrainz/musicbrainzclient.h
@@ -218,7 +218,11 @@ class MusicBrainzClient : public QObject {
 
 };
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+inline size_t qHash(const MusicBrainzClient::Result& result) {
+#else
 inline uint qHash(const MusicBrainzClient::Result& result) {
+#endif
   return qHash(result.album_) ^ qHash(result.artist_) ^ result.duration_msec_ ^ qHash(result.title_) ^ result.track_ ^ result.year_;
 }
 
diff --git a/src/playlist/playlistfilter.cpp b/src/playlist/playlistfilter.cpp
index 84c2d89c8..40db18cf3 100644
--- a/src/playlist/playlistfilter.cpp
+++ b/src/playlist/playlistfilter.cpp
@@ -84,7 +84,11 @@ bool PlaylistFilter::filterAcceptsRow(int row, const QModelIndex &parent) const
   QString filter = filterRegExp().pattern();
 #endif
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+  size_t hash = qHash(filter);
+#else
   uint hash = qHash(filter);
+#endif
   if (hash != query_hash_) {
     // Parse the query
     FilterParser p(filter, column_names_, numerical_columns_);
diff --git a/src/playlist/playlistfilter.h b/src/playlist/playlistfilter.h
index a9a23d663..a1e79d9a0 100644
--- a/src/playlist/playlistfilter.h
+++ b/src/playlist/playlistfilter.h
@@ -47,10 +47,14 @@ class PlaylistFilter : public QSortFilterProxyModel {
   // public so Playlist::NextVirtualIndex and friends can get at it
   bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const override;
 
-private:
+ private:
   // Mutable because they're modified from filterAcceptsRow() const
   mutable QScopedPointer<FilterTree> filter_tree_;
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+  mutable size_t query_hash_;
+#else
   mutable uint query_hash_;
+#endif
 
   QMap<QString, int> column_names_;
   QSet<int> numerical_columns_;