diff --git a/dix/window.c b/dix/window.c
index 9bbbed585..256d8666c 100644
--- a/dix/window.c
+++ b/dix/window.c
@@ -3534,7 +3534,7 @@ CheckWindowOptionalNeed (WindowPtr w)
     WindowOptPtr optional;
     WindowOptPtr parentOptional;
 
-    if (!w->parent)
+    if (!w->parent || !w->optional)
 	return;
     optional = w->optional;
     if (optional->dontPropagateMask != DontPropagateMasks[w->dontPropagate])