--- src/app.c.orig	Thu Nov 19 00:59:28 1998
+++ src/app.c	Thu Nov 19 00:59:37 1998
@@ -34,7 +34,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <math.h>
-#include <getopt.h>
+#include <unistd.h>
 #include "app.h"
 #include "about.h"
 #include "help.h"
