diff --git a/cipher-3des1.c b/cipher-3des1.c
index 2e8735d..61798bf 100644
--- a/cipher-3des1.c
+++ b/cipher-3des1.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: cipher-3des1.c,v 1.5 2006/07/22 20:48:22 stevesk Exp $ */
+/* $OpenBSD: cipher-3des1.c,v 1.6 2006/08/03 03:34:42 deraadt Exp $ */
 /*
  * Copyright (c) 2003 Markus Friedl.  All rights reserved.
  *
@@ -25,6 +25,8 @@
 
 #include "includes.h"
 
+#include <sys/types.h>
+
 #include <openssl/evp.h>
 
 #include <string.h>