diff --git a/sys/sys/systm.h b/sys/sys/systm.h
index 24c01e8cbbd8..9335203adac2 100644
--- a/sys/sys/systm.h
+++ b/sys/sys/systm.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: systm.h,v 1.89 1999/03/24 05:51:29 mrg Exp $	*/
+/*	$NetBSD: systm.h,v 1.90 1999/05/09 13:57:44 lukem Exp $	*/
 
 /*-
  * Copyright (c) 1982, 1988, 1991, 1993
@@ -187,6 +187,8 @@ void	ttyprintf __P((struct tty *, const char *, ...))
 
 char	*bitmask_snprintf __P((u_quad_t, const char *, char *, size_t));
 
+int	format_bytes __P((char *, size_t, u_int64_t));
+
 void	tablefull __P((const char *));
 
 void	*memchr __P((const void *, int, size_t));