diff --git a/share/man/man7/hier.7 b/share/man/man7/hier.7
index 13b265cb7f22..74dba3e92038 100644
--- a/share/man/man7/hier.7
+++ b/share/man/man7/hier.7
@@ -1,4 +1,4 @@
-.\"	$NetBSD: hier.7,v 1.31 2001/01/18 14:16:12 itojun Exp $
+.\"	$NetBSD: hier.7,v 1.32 2001/01/19 01:36:04 enami Exp $
 .\"
 .\" Copyright (c) 1990, 1993, 1994
 .\"	The Regents of the University of California.  All rights reserved.
@@ -113,6 +113,9 @@ the null device; see
 .It Sy tty
 process' controlling terminal device; see
 .Xr tty 4
+.It Sy zero
+the zero device; see
+.Xr zero 4
 .El
 .It Sy /dump/
 online
@@ -926,8 +929,6 @@ file system support
 .El
 .It Sy uvm/
 UVM virtual memory system
-.It Sy vm/
-virtual memory support
 .El
 .It Sy usr.bin/
 source for utilities/files in