diff --git a/openbox/event.c b/openbox/event.c
index bc59d67e..04ecf383 100644
--- a/openbox/event.c
+++ b/openbox/event.c
@@ -475,10 +475,12 @@ static void event_process(const XEvent *ec, gpointer data)
             client = WINDOW_AS_CLIENT(obwin);
             break;
         case Window_Menu:
-        case Window_Internal:
             /* not to be used for events */
             g_assert_not_reached();
             break;
+        case Window_Internal:
+            /* we don't do anything with events directly on these windows */
+            break;
         }
     }