diff --git a/qtinterface/tqt.h.cmake b/qtinterface/tqt.h.cmake
index c3d0eeb..92d90e7 100644
--- a/qtinterface/tqt.h.cmake
+++ b/qtinterface/tqt.h.cmake
@@ -249,10 +249,6 @@ Boston, MA 02110-1301, USA.
 #define TQT_TQTABLETEVENT(x) (static_cast<TQTabletEvent*>(static_cast<TQTabletEvent*>(static_cast<TQEvent*>(x))))
 #define TQT_TQCONTEXTMENUEVENT(x) (static_cast<TQContextMenuEvent*>(static_cast<TQContextMenuEvent*>(static_cast<TQEvent*>(x))))
 
-#define TQT_BASE_OBJECT_NAME TQObject
-#define TQT_BASE_OBJECT(x) (static_cast<TQT_BASE_OBJECT_NAME*>(x))
-#define TQT_BASE_OBJECT_CONST(x) (static_cast<const TQT_BASE_OBJECT_NAME*>(x))
-
 #define setTqmaximumSize	setMaximumSize
 #define setTqminimumSize	setMinimumSize
 #define setTqalignment		setAlignment