--- main.c.orig	1991-04-03 04:04:28.000000000 +0200
+++ main.c	2009-03-24 13:02:59.000000000 +0100
@@ -31,6 +31,7 @@
 #include <X11/Xatom.h>
 
 #include <stdio.h>
+#include <stdlib.h>
 
 #include "defs.h"
 #include "icon.h"