diff --git a/kcalc/kcalc_const_menu.h b/kcalc/kcalc_const_menu.h
index 331a6a1..92d9386 100644
--- a/kcalc/kcalc_const_menu.h
+++ b/kcalc/kcalc_const_menu.h
@@ -38,7 +38,8 @@ struct science_constant{
 
 class KCalcConstMenu : public TQPopupMenu
 {
-TQ_OBJECT 
+  Q_OBJECT
+  TQ_OBJECT
 
  public:
   KCalcConstMenu(TQWidget * tqparent = 0, const char * name = 0);