diff --git a/mingw-w64-headers/include/unknwn.h b/mingw-w64-headers/include/unknwn.h
index 4274350..cc3d83e 100644
--- a/mingw-w64-headers/include/unknwn.h
+++ b/mingw-w64-headers/include/unknwn.h
@@ -67,7 +67,7 @@
 	virtual HRESULT WINAPI QueryInterface(REFIID riid,void **ppvObject) = 0;
 	virtual ULONG WINAPI AddRef(void) = 0;
 	virtual ULONG WINAPI Release(void) = 0;
-	template<class Q> HRESULT WINAPI QueryInterface(Q **pp) { return QueryInterface(__uuidof(Q),(void **)pp); }
+	template<class Q> HRESULT WINAPI QueryInterface(Q **pp) { return QueryInterface(__uuidof(*pp),(void **)pp); }
       END_INTERFACE
     };
   }