diff --git a/usr.bin/kdump/mkioctls b/usr.bin/kdump/mkioctls
index 3c6d995211c6..dae5d59093e6 100644
--- a/usr.bin/kdump/mkioctls
+++ b/usr.bin/kdump/mkioctls
@@ -1,5 +1,5 @@
 #!/bin/sh
-#	$NetBSD: mkioctls,v 1.27 2006/08/30 23:26:25 he Exp $
+#	$NetBSD: mkioctls,v 1.28 2006/08/31 22:25:34 he Exp $
 #
 # Copyright (c) 1994
 #	The Regents of the University of California.  All rights reserved.
@@ -105,6 +105,7 @@ BEGIN {
 	keep["OPIOCSET"] = 1; # Same as OFIOCSET
 	keep["MBPPIOCSPARAM"] = 1; # Same as PARIOCSPARAM
 	keep["MBPPIOCGPARAM"] = 1; # Same as PARIOCGPARAM
+	keep["CLOCKCTL_ADJTIME"] = 1; # Same as TCTRL_MODEM_PWR
 
 	i = 1;
 	altqt[i++] = "RED";