diff --git a/src/window.c b/src/window.c
index 872a7a9..06cab7e 100644
--- a/src/window.c
+++ b/src/window.c
@@ -1904,7 +1904,7 @@ void wWindowSynthConfigureNotify(WWindow *wwin)
 {
 	WNativeWindow above = WNATIVE_NONE;
 
-	if (HAS_TITLEBAR(wwin) && wwin->frame->titlebar)
+	if (HAS_TITLEBAR(wwin) && wwin->frame && wwin->frame->titlebar)
 		above = wwin->frame->titlebar->window;
 
 	wm_backend->client_synth_configure(wwin->client_win,