diff --git a/sys/modules/mfs/Makefile b/sys/modules/mfs/Makefile
index d1fb29b7a27..6fde55f65ac 100644
--- a/sys/modules/mfs/Makefile
+++ b/sys/modules/mfs/Makefile
@@ -1,13 +1,13 @@
-#	$Id: Makefile,v 1.3 1997/02/22 12:48:36 peter Exp $
+#	$Id: Makefile,v 1.4 1998/10/16 04:30:47 peter Exp $
 
 .PATH:	${.CURDIR}/../../ufs/mfs
 KMOD=	mfs
 SRCS=	mfs_vfsops.c mfs_vnops.c opt_mfs.h
 NOMAN=
 VFS_KLD=
-CFLAGS+= -DFFS -DMFS
+CLEANFILES+= opt_mfs.h
 
 opt_mfs.h:
-	touch opt_mfs.h
+	touch ${.TARGET}
 
 .include <bsd.kmod.mk>