diff --git a/3rdparty/singleapplication/singleapplication.cpp b/3rdparty/singleapplication/singleapplication.cpp
index 99174bcc9..f400a5e2a 100644
--- a/3rdparty/singleapplication/singleapplication.cpp
+++ b/3rdparty/singleapplication/singleapplication.cpp
@@ -169,7 +169,7 @@ bool SingleApplication::sendMessage( QByteArray message, int timeout )
     d->connectToPrimary( timeout,  SingleApplicationPrivate::Reconnect );
 
     d->socket->write( message );
-    bool dataWritten = d->socket->flush();
-    d->socket->waitForBytesWritten( timeout );
+    bool dataWritten = d->socket->waitForBytesWritten( timeout );
+    d->socket->flush();
     return dataWritten;
 }
diff --git a/3rdparty/singleapplication/singlecoreapplication.cpp b/3rdparty/singleapplication/singlecoreapplication.cpp
index b9dcddc7c..498d2b34b 100644
--- a/3rdparty/singleapplication/singlecoreapplication.cpp
+++ b/3rdparty/singleapplication/singlecoreapplication.cpp
@@ -169,7 +169,7 @@ bool SingleCoreApplication::sendMessage( QByteArray message, int timeout )
     d->connectToPrimary( timeout,  SingleCoreApplicationPrivate::Reconnect );
 
     d->socket->write( message );
-    bool dataWritten = d->socket->flush();
-    d->socket->waitForBytesWritten( timeout );
+    bool dataWritten = d->socket->waitForBytesWritten( timeout );
+    d->socket->flush();
     return dataWritten;
 }