$NetBSD$

--- wordfile.c.orig	2008-07-12 19:26:33.000000000 +0200
+++ wordfile.c	2008-07-12 19:27:14.000000000 +0200
@@ -37,6 +37,7 @@
 
 #include <stdio.h>
 #include <unistd.h>
+#include <stdlib.h>
 #include <string.h>
 #include <signal.h>
 #include <sys/types.h>
