--- rxvt-unicode/src/command.C	2011/12/05 12:52:34	1.502
+++ rxvt-unicode/src/command.C	2011/12/05 13:36:56	1.503
@@ -1711,7 +1711,7 @@
 void
 rxvt_term::set_urgency (bool enable)
 {
-  if (!(enable || urgency_hint))
+  if (enable == urgency_hint)
     return;
 
   if (XWMHints *h = XGetWMHints (dpy, parent))