1 files changed, 4 insertions, 3 deletions
diff --git a/src/render/backend/platformsurfacefilter_p.h b/src/render/backend/platformsurfacefilter_p.h
index 7074850d9..d6680df89 100644
--- a/src/render/backend/platformsurfacefilter_p.h
+++ b/src/render/backend/platformsurfacefilter_p.h
@@ -17,9 +17,10 @@
 
 #include <private/qt3drender_global_p.h>
 
+#include <QtCore/qmutex.h>
 #include <QtCore/qobject.h>
+#include <QtCore/qpointer.h>
 #include <QtGui/qsurface.h>
-#include <QSemaphore>
 
 QT_BEGIN_NAMESPACE
 
@@ -64,10 +65,10 @@ public:
         }
     }
 private:
-    QObject *m_obj;
+    QPointer<QObject> m_obj;
     QSurface *m_surface;
 
-    static QSemaphore m_surfacesSemaphore;
+    static QBasicMutex m_surfacesMutex;
     static QHash<QSurface *, bool> m_surfacesValidity;
     void markSurfaceAsValid();
 };