diff --git a/3rdparty/singleapplication/singleapplication_p.cpp b/3rdparty/singleapplication/singleapplication_p.cpp
index 30ab63d93..c80ea37d8 100644
--- a/3rdparty/singleapplication/singleapplication_p.cpp
+++ b/3rdparty/singleapplication/singleapplication_p.cpp
@@ -61,8 +61,8 @@
 #  include <lmcons.h>
 #endif
 
-SingleApplicationPrivate::SingleApplicationPrivate(SingleApplication *q_ptr)
-  : q_ptr(q_ptr),
+SingleApplicationPrivate::SingleApplicationPrivate(SingleApplication *_q_ptr)
+  : q_ptr(_q_ptr),
     memory(nullptr),
     socket(nullptr),
     server(nullptr),
@@ -186,7 +186,7 @@ void SingleApplicationPrivate::startPrimary() {
 
 void SingleApplicationPrivate::startSecondary() {}
 
-void SingleApplicationPrivate::connectToPrimary(int msecs, ConnectionType connectionType) {
+void SingleApplicationPrivate::connectToPrimary(const int msecs, const ConnectionType connectionType) {
 
   // Connect to the Local Server of the Primary Instance if not already connected.
   if (socket == nullptr) {
@@ -386,14 +386,14 @@ void SingleApplicationPrivate::readInitMessageBody(QLocalSocket *sock) {
 
 }
 
-void SingleApplicationPrivate::slotDataAvailable(QLocalSocket *dataSocket, quint32 instanceId) {
+void SingleApplicationPrivate::slotDataAvailable(QLocalSocket *dataSocket, const quint32 instanceId) {
 
   Q_Q(SingleApplication);
   Q_EMIT q->receivedMessage(instanceId, dataSocket->readAll());
 
 }
 
-void SingleApplicationPrivate::slotClientConnectionClosed(QLocalSocket *closedSocket, quint32 instanceId) {
+void SingleApplicationPrivate::slotClientConnectionClosed(QLocalSocket *closedSocket, const quint32 instanceId) {
 
   if (closedSocket->bytesAvailable() > 0)
     Q_EMIT slotDataAvailable(closedSocket, instanceId);
diff --git a/3rdparty/singleapplication/singleapplication_p.h b/3rdparty/singleapplication/singleapplication_p.h
index 650c51c59..dc970394d 100644
--- a/3rdparty/singleapplication/singleapplication_p.h
+++ b/3rdparty/singleapplication/singleapplication_p.h
@@ -74,14 +74,14 @@ class SingleApplicationPrivate : public QObject {
   };
   Q_DECLARE_PUBLIC(SingleApplication)
 
-  SingleApplicationPrivate( SingleApplication *q_ptr );
+  SingleApplicationPrivate(SingleApplication *_q_ptr);
   ~SingleApplicationPrivate();
 
   void genBlockServerName();
   void initializeMemoryBlock();
   void startPrimary();
   void startSecondary();
-  void connectToPrimary(int msecs, ConnectionType connectionType );
+  void connectToPrimary(const int msecs, const ConnectionType connectionType);
   quint16 blockChecksum();
   qint64 primaryPid();
   void readInitMessageHeader(QLocalSocket *socket);
@@ -98,8 +98,8 @@ class SingleApplicationPrivate : public QObject {
 
  public slots:
   void slotConnectionEstablished();
-  void slotDataAvailable(QLocalSocket*, quint32);
-  void slotClientConnectionClosed(QLocalSocket*, quint32);
+  void slotDataAvailable(QLocalSocket*, const quint32);
+  void slotClientConnectionClosed(QLocalSocket*, const quint32);
 };
 
 #endif  // SINGLEAPPLICATION_P_H
diff --git a/3rdparty/singleapplication/singlecoreapplication_p.cpp b/3rdparty/singleapplication/singlecoreapplication_p.cpp
index d05a0b96a..0d560cfe2 100644
--- a/3rdparty/singleapplication/singlecoreapplication_p.cpp
+++ b/3rdparty/singleapplication/singlecoreapplication_p.cpp
@@ -61,8 +61,8 @@
 #  include <lmcons.h>
 #endif
 
-SingleCoreApplicationPrivate::SingleCoreApplicationPrivate(SingleCoreApplication *q_ptr)
-  : q_ptr(q_ptr),
+SingleCoreApplicationPrivate::SingleCoreApplicationPrivate(SingleCoreApplication *_q_ptr)
+  : q_ptr(_q_ptr),
     memory(nullptr),
     socket(nullptr),
     server(nullptr),
@@ -186,7 +186,7 @@ void SingleCoreApplicationPrivate::startPrimary() {
 
 void SingleCoreApplicationPrivate::startSecondary() {}
 
-void SingleCoreApplicationPrivate::connectToPrimary(int msecs, ConnectionType connectionType) {
+void SingleCoreApplicationPrivate::connectToPrimary(const int msecs, const ConnectionType connectionType) {
 
   // Connect to the Local Server of the Primary Instance if not already connected.
   if (socket == nullptr) {
@@ -386,14 +386,14 @@ void SingleCoreApplicationPrivate::readInitMessageBody(QLocalSocket *sock) {
 
 }
 
-void SingleCoreApplicationPrivate::slotDataAvailable(QLocalSocket *dataSocket, quint32 instanceId) {
+void SingleCoreApplicationPrivate::slotDataAvailable(QLocalSocket *dataSocket, const quint32 instanceId) {
 
   Q_Q(SingleCoreApplication);
   Q_EMIT q->receivedMessage(instanceId, dataSocket->readAll());
 
 }
 
-void SingleCoreApplicationPrivate::slotClientConnectionClosed(QLocalSocket *closedSocket, quint32 instanceId) {
+void SingleCoreApplicationPrivate::slotClientConnectionClosed(QLocalSocket *closedSocket, const quint32 instanceId) {
 
   if (closedSocket->bytesAvailable() > 0)
     Q_EMIT slotDataAvailable(closedSocket, instanceId);
diff --git a/3rdparty/singleapplication/singlecoreapplication_p.h b/3rdparty/singleapplication/singlecoreapplication_p.h
index d8d7e743a..05525ac38 100644
--- a/3rdparty/singleapplication/singlecoreapplication_p.h
+++ b/3rdparty/singleapplication/singlecoreapplication_p.h
@@ -74,14 +74,14 @@ class SingleCoreApplicationPrivate : public QObject {
   };
   Q_DECLARE_PUBLIC(SingleCoreApplication)
 
-  SingleCoreApplicationPrivate( SingleCoreApplication *q_ptr );
+  SingleCoreApplicationPrivate(SingleCoreApplication *_q_ptr);
   ~SingleCoreApplicationPrivate();
 
   void genBlockServerName();
   void initializeMemoryBlock();
   void startPrimary();
   void startSecondary();
-  void connectToPrimary(int msecs, ConnectionType connectionType );
+  void connectToPrimary(const int msecs, const ConnectionType connectionType);
   quint16 blockChecksum();
   qint64 primaryPid();
   void readInitMessageHeader(QLocalSocket *socket);
@@ -98,8 +98,8 @@ class SingleCoreApplicationPrivate : public QObject {
 
  public slots:
   void slotConnectionEstablished();
-  void slotDataAvailable(QLocalSocket*, quint32);
-  void slotClientConnectionClosed(QLocalSocket*, quint32);
+  void slotDataAvailable(QLocalSocket*, const quint32);
+  void slotClientConnectionClosed(QLocalSocket*, const quint32);
 };
 
 #endif  // SINGLECOREAPPLICATION_P_H