diff -r 4a6454b15459 config.def.h
--- a/config.def.h	Wed Nov 25 14:03:49 2009 +0100
+++ b/config.def.h	Wed Nov 25 14:53:41 2009 +0100
@@ -9,8 +9,8 @@
 static time_t sessiontime   = 3600;
 
 #define SETPROP(p)       { .v = (char *[]){ "/bin/sh", "-c", \
-	"prop=\"`xprop -id $1 $0 | cut -d '\"' -f 2 | dmenu`\" &&" \
-	"xprop -id $1 -f $0 8s -set $0 \"$prop\"", \
+	"prop=\"`xprop -id $1 $0 | grep -vi 'not found' | cut -d '\"' -f 2 " \
+	"| dmenu`\" && xprop -id $1 -f $0 8s -set $0 \"$prop\"", \
 	p, winid, NULL } }
 #define MODKEY GDK_CONTROL_MASK
 static Key keys[] = {