diff --git a/src/gui/kernel/qguiapplication.cpp b/src/gui/kernel/qguiapplication.cpp
index fb14490a242..7abda84bfa7 100644
--- a/src/gui/kernel/qguiapplication.cpp
+++ b/src/gui/kernel/qguiapplication.cpp
@@ -1065,7 +1065,8 @@ QGuiApplicationPrivate::~QGuiApplicationPrivate()
 
     QPixmapCache::clear();
 
-    delete  platform_theme;
+    delete platform_theme;
+    platform_theme = 0;
     delete platform_integration;
     platform_integration = 0;
     delete m_gammaTables.load();