--- src/modules/klavier.c.orig	Thu Mar 25 06:58:16 1999
+++ src/modules/klavier.c	Tue Jun 20 02:28:26 2006
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <time.h>
 #include <unistd.h>