diff --git a/lib/compatibility/kmdi/qextmdi/kmdichildview.cpp b/lib/compatibility/kmdi/qextmdi/kmdichildview.cpp
index ba80552a..02400c4d 100644
--- a/lib/compatibility/kmdi/qextmdi/kmdichildview.cpp
+++ b/lib/compatibility/kmdi/qextmdi/kmdichildview.cpp
@@ -492,7 +492,7 @@ void KMdiChildView::slot_childDestroyed()
 
 	// if we lost a child we uninstall ourself as event filter for the lost
 	// child and its tqchildren
-	const TQObject * pLostChild = TQT_TQOBJECT(TQT_BASE_OBJECT_NAME::sender());
+	const TQObject * pLostChild = TQT_TQOBJECT(const_cast<TQT_BASE_OBJECT_NAME*>(TQT_BASE_OBJECT_NAME::sender()));
 	if ( pLostChild && ( pLostChild->isWidgetType() ) )
 	{
 		TQObjectList* list = ( ( TQObject* ) ( pLostChild ) ) ->queryList( TQWIDGET_OBJECT_NAME_STRING );