diff --git a/3rdparty/singleapplication/singleapplication_p.cpp b/3rdparty/singleapplication/singleapplication_p.cpp
index 6210b0cb7..125d09a88 100644
--- a/3rdparty/singleapplication/singleapplication_p.cpp
+++ b/3rdparty/singleapplication/singleapplication_p.cpp
@@ -449,10 +449,9 @@ void SingleApplicationPrivate::readInitMessageBody(QLocalSocket *sock) {
   readStream >> latin1Name;
 
   // connection type
-  ConnectionType connectionType = InvalidConnection;
   quint8 connTypeVal = InvalidConnection;
   readStream >> connTypeVal;
-  connectionType = static_cast<ConnectionType>(connTypeVal);
+  const ConnectionType connectionType = static_cast<ConnectionType>(connTypeVal);
 
   // instance id
   quint32 instanceId = 0;
diff --git a/3rdparty/singleapplication/singlecoreapplication_p.cpp b/3rdparty/singleapplication/singlecoreapplication_p.cpp
index 6ddee2f25..2fd87bcec 100644
--- a/3rdparty/singleapplication/singlecoreapplication_p.cpp
+++ b/3rdparty/singleapplication/singlecoreapplication_p.cpp
@@ -449,10 +449,9 @@ void SingleCoreApplicationPrivate::readInitMessageBody(QLocalSocket *sock) {
   readStream >> latin1Name;
 
   // connection type
-  ConnectionType connectionType = InvalidConnection;
   quint8 connTypeVal = InvalidConnection;
   readStream >> connTypeVal;
-  connectionType = static_cast<ConnectionType>(connTypeVal);
+  const ConnectionType connectionType = static_cast<ConnectionType>(connTypeVal);
 
   // instance id
   quint32 instanceId = 0;