diff --git a/src/gui_kde_x11.cc b/src/gui_kde_x11.cc
index c8873ec..32fb747 100644
--- a/src/gui_kde_x11.cc
+++ b/src/gui_kde_x11.cc
@@ -1210,7 +1210,7 @@
 {
     if (!menu || !menu->parent || !menu->parent->widget)
 	return;
-    menu->parent->widget->setItemEnabled((int)menu, !grey);
+    menu->parent->widget->setItemEnabled((long)menu, !grey);
     gui_mch_update();
 }//}}}