diff --git a/share/man/man4/ddb.4 b/share/man/man4/ddb.4
index e185826a320c..82eb343e42d2 100644
--- a/share/man/man4/ddb.4
+++ b/share/man/man4/ddb.4
@@ -1,4 +1,4 @@
-.\"	$NetBSD: ddb.4,v 1.164 2016/12/27 21:54:50 pgoyette Exp $
+.\"	$NetBSD: ddb.4,v 1.165 2017/01/12 08:46:49 martin Exp $
 .\"
 .\" Copyright (c) 1997 - 2009 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -56,7 +56,7 @@
 .\" any improvements or extensions that they make and grant Carnegie Mellon
 .\" the rights to redistribute these changes.
 .\"
-.Dd December 28, 2016
+.Dd January 12, 2017
 .Dt DDB 4
 .Os
 .Sh NAME
@@ -758,6 +758,12 @@ Print the vnode at
 If
 .Cm /f
 is specified, the complete vnode is printed.
+.It Ic show vnode_lock Ns Oo Cm /f Oc Ar address
+Print the vnode which has it's lock at
+.Ar address .
+If
+.Cm /f
+is specified, the complete vnode is printed.
 .It Ic show watches
 Display all watchpoints.
 .It Ic sifting Ns Oo Cm /F Oc Ar string