diff --git a/sys/arch/mac68k/mac68k/genassym.cf b/sys/arch/mac68k/mac68k/genassym.cf
index cdbc60a24dda..439c4cd623e7 100644
--- a/sys/arch/mac68k/mac68k/genassym.cf
+++ b/sys/arch/mac68k/mac68k/genassym.cf
@@ -1,4 +1,4 @@
-#	$NetBSD: genassym.cf,v 1.3 1997/08/30 22:29:10 scottr Exp $
+#	$NetBSD: genassym.cf,v 1.4 1997/10/27 03:02:51 briggs Exp $
 
 #
 # Copyright (c) 1990 The Regents of the University of California.
@@ -91,7 +91,7 @@ define	USRPTSIZE		USRPTSIZE
 define	USRIOSIZE		USRIOSIZE
 define	USRSTACK		USRSTACK
 
-define	MSGBUFPTECNT		btoc(sizeof (struct msgbuf))
+define	MSGBUFPTECNT		btoc(sizeof (struct kern_msgbuf))
 define	NMBCLUSTERS		NMBCLUSTERS
 define	MCLBYTES		MCLBYTES
 define	NKMEMCLUSTERS		NKMEMCLUSTERS