diff --git a/lib/libc/sys/shutdown.2 b/lib/libc/sys/shutdown.2
index 927e3bdf3295..f242ec50d679 100644
--- a/lib/libc/sys/shutdown.2
+++ b/lib/libc/sys/shutdown.2
@@ -1,4 +1,4 @@
-.\"	$NetBSD: shutdown.2,v 1.5 1995/02/27 12:37:11 cgd Exp $
+.\"	$NetBSD: shutdown.2,v 1.6 1998/04/25 10:42:33 kleink Exp $
 .\"
 .\" Copyright (c) 1983, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -50,15 +50,18 @@ call causes all or part of a full-duplex connection on
 the socket associated with
 .Fa s
 to be shut down.
-If
+The
 .Fa how
-is 0, further receives will be disallowed.
-If
-.Fa how
-is 1, further sends will be disallowed.
-If
-.Fa how
-is 2, further sends and receives will be disallowed.
+argument specifies which part of the connection will be shut down.
+Permissible values are:
+.Bl -tag -width SHUT_RDWRXX -offset indent
+.It SHUT_RD
+further receives will be disallowed.
+.It SHUT_RW
+further sends will be disallowed.
+.It SHUT_RDWR
+further sends and receives will be disallowed.
+.El
 .Sh DIAGNOSTICS
 A 0 is returned if the call succeeds, -1 if it fails.
 .Sh ERRORS