diff --git a/KWinInterface.h b/KWinInterface.h
index 9cd1dd62a7..6f13bd2a70 100644
--- a/KWinInterface.h
+++ b/KWinInterface.h
@@ -14,7 +14,7 @@ class KWinInterface : virtual public DCOPObject
   virtual ASYNC reconfigure() = 0;
   virtual ASYNC killWindow() = 0;
   virtual void doNotManage(QString)= 0;
-  virtual void showWindowMenuAt(unsigned long,int,int)= 0;
+  virtual void showWindowMenuAt(unsigned long winId, int x, int y)= 0;
 
 };