diff --git a/src/widgets/kernel/qwidget.h b/src/widgets/kernel/qwidget.h
index 78b693c78d..64042ccc36 100644
--- a/src/widgets/kernel/qwidget.h
+++ b/src/widgets/kernel/qwidget.h
@@ -607,7 +607,6 @@ public:
 
     QBackingStore *backingStore() const;
 
-    void setWindowHandle(QWindow *window);
     QWindow *windowHandle() const;
 
     friend class QDesktopScreenWidget;