diff --git a/share/man/man4/ddb.4 b/share/man/man4/ddb.4
index 0dc90de85d9a..1a4593275c74 100644
--- a/share/man/man4/ddb.4
+++ b/share/man/man4/ddb.4
@@ -1,4 +1,4 @@
-.\"	$NetBSD: ddb.4,v 1.109 2008/01/09 11:26:13 simonb Exp $
+.\"	$NetBSD: ddb.4,v 1.110 2008/02/18 18:35:17 tron Exp $
 .\"
 .\" Copyright (c) 1997 - 2007 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -116,6 +116,10 @@ from the keyboard:
 .Bl -tag -offset indent -width "mvme68k" -compact
 .It alpha
 \*[Lt]Ctrl\*[Gt]-\*[Lt]Alt\*[Gt]-\*[Lt]Esc\*[Gt] on PC style keyboards.
+.It amd64
+\*[Lt]Ctrl\*[Gt]-\*[Lt]Alt\*[Gt]-\*[Lt]Esc\*[Gt]
+.br
+\*[Lt]Break\*[Gt] on serial console.
 .It amiga
 \*[Lt]LAlt\*[Gt]-\*[Lt]LAmiga\*[Gt]-\*[Lt]F10\*[Gt]
 .It atari