diff --git a/usr.sbin/sysinst/arch/vax/md.h b/usr.sbin/sysinst/arch/vax/md.h
index 5a6ec1ffc846..b29c31e527bf 100644
--- a/usr.sbin/sysinst/arch/vax/md.h
+++ b/usr.sbin/sysinst/arch/vax/md.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: md.h,v 1.5 2022/06/16 14:03:39 tsutsui Exp $	*/
+/*	$NetBSD: md.h,v 1.6 2022/12/10 16:03:15 jakllsch Exp $	*/
 
 /*
  * Copyright 1997 Piermont Information Systems Inc.
@@ -53,6 +53,9 @@
 #define XNEEDMB 	150	/* Extra megs for full X installation */
 #define DEBNEEDMB	650	/* Extra megs for debug sets */
 
+/* have support for booting from UFS2 */
+#define HAVE_UFS2_BOOT
+
 /*
  * Default filesets to fetch and install during installation
  * or upgrade.