diff -ur xfce4-cpugraph-plugin-0.4.0.orig/panel-plugin/cpu.c xfce4-cpugraph-plugin-0.4.0/panel-plugin/cpu.c
--- xfce4-cpugraph-plugin-0.4.0.orig/panel-plugin/cpu.c	2007-11-22 07:18:32.000000000 +0200
+++ xfce4-cpugraph-plugin-0.4.0/panel-plugin/cpu.c	2009-08-25 15:12:14.000000000 +0300
@@ -27,6 +27,7 @@
 #include "settings.h"
 #include "cpu_os.h"
 
+#include <stdlib.h>
 
 static GtkTooltips *tooltips = NULL;