--- axe.c.orig	Wed Apr  6 18:07:34 1994
+++ axe.c	Wed Mar 16 19:28:58 2016
@@ -75,6 +75,7 @@
 #include <axeLogo.xbm>
 #include <sys/param.h>
 #include <stdio.h>
+#include <stdlib.h>
 
 #ifdef EXTENSION
 #include "Language.h"