diff --git a/3rdparty/qtsingleapplication/qtlocalpeer.cpp b/3rdparty/qtsingleapplication/qtlocalpeer.cpp
index c707927ce..8bbe1701e 100644
--- a/3rdparty/qtsingleapplication/qtlocalpeer.cpp
+++ b/3rdparty/qtsingleapplication/qtlocalpeer.cpp
@@ -59,14 +59,12 @@ static PProcessIdToSessionId pProcessIdToSessionId = 0;
 #include <time.h>
 #endif
 
-namespace QtLP_Private {
 #include "qtlockedfile.cpp"
 #if defined(Q_OS_WIN)
 #include "qtlockedfile_win.cpp"
 #else
 #include "qtlockedfile_unix.cpp"
 #endif
-}
 
 const char* QtLocalPeer::ack = "ack";
 
@@ -118,7 +116,7 @@ bool QtLocalPeer::isClient()
     if (lockFile.isLocked())
         return false;
 
-    if (!lockFile.lock(QtLP_Private::QtLockedFile::WriteLock, false))
+    if (!lockFile.lock(QtLockedFile::WriteLock, false))
         return true;
 
     bool res = server->listen(socketName);
diff --git a/3rdparty/qtsingleapplication/qtlocalpeer.h b/3rdparty/qtsingleapplication/qtlocalpeer.h
index bcb5cf583..4380b7a5a 100644
--- a/3rdparty/qtsingleapplication/qtlocalpeer.h
+++ b/3rdparty/qtsingleapplication/qtlocalpeer.h
@@ -49,9 +49,7 @@
 #include <QtNetwork/QLocalSocket>
 #include <QtCore/QDir>
 
-namespace QtLP_Private {
 #include "qtlockedfile.h"
-}
 
 class QtLocalPeer : public QObject
 {
@@ -74,7 +72,7 @@ protected:
     QString id;
     QString socketName;
     QLocalServer* server;
-    QtLP_Private::QtLockedFile lockFile;
+    QtLockedFile lockFile;
 
 private:
     static const char* ack;