diff --git a/sys/sys/endian.h b/sys/sys/endian.h
index 79758ef37cbd..c4ae4cb0969b 100644
--- a/sys/sys/endian.h
+++ b/sys/sys/endian.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: endian.h,v 1.4 2001/08/22 07:42:07 itojun Exp $	*/
+/*	$NetBSD: endian.h,v 1.5 2002/05/12 22:59:50 kleink Exp $	*/
 
 /*
  * Copyright (c) 1987, 1991, 1993
@@ -76,11 +76,19 @@
 #ifndef _LOCORE
 /* C-family endian-ness definitions */
 
+#include <sys/ansi.h>
 #include <sys/cdefs.h>
 #include <sys/types.h>
 
-typedef u_int32_t	in_addr_t;
-typedef u_int16_t	in_port_t;
+#ifndef in_addr_t
+typedef __in_addr_t	in_addr_t;
+#define	in_addr_t	__in_addr_t
+#endif
+
+#ifndef in_port_t
+typedef __in_port_t	in_port_t;
+#define	in_port_t	__in_port_t
+#endif
 
 __BEGIN_DECLS
 uint32_t	htonl __P((uint32_t)) __attribute__((__const__));