diff --git a/sys/modules/md/Makefile b/sys/modules/md/Makefile
index 169b0e7edc60..0c1cbe5177d4 100644
--- a/sys/modules/md/Makefile
+++ b/sys/modules/md/Makefile
@@ -2,8 +2,16 @@
 
 .PATH:	${.CURDIR}/../../dev/md
 KMOD=	md
-SRCS=	md.c
+SRCS=	md.c opt_mfs.h opt_md.h
 NOMAN=
+CLEANFILES +=	opt_mfs.h opt_md.h
+
+opt_md.h:
+	touch opt_md.h
+
+opt_mfs.h:
+	touch opt_mfs.h
 
 .include <bsd.kmod.mk>
 
+