diff --git a/mopchk/Makefile.linux b/mopchk/Makefile.linux
new file mode 100644
index 0000000..169f8b7
--- /dev/null
+++ b/mopchk/Makefile.linux
@@ -0,0 +1,11 @@
+# $NetBSD: Makefile.linux,v 1.1 2016/06/08 01:15:26 christos Exp $
+SRCS=mopchk.c
+OBJS=${SRCS:.c=.o}
+
+LDLIBS+=../common/libcommon.a
+CFLAGS+=-I../common
+
+mopchk: ${OBJS}
+
+clean:
+	rm -f ${OBJS} mopchk
diff --git a/mopchk/mopchk.c b/mopchk/mopchk.c
index 514e3aa..5800775 100644
--- a/mopchk/mopchk.c
+++ b/mopchk/mopchk.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: mopchk.c,v 1.13 2011/08/30 19:49:11 joerg Exp $	*/
+/*	$NetBSD: mopchk.c,v 1.14 2016/06/08 01:15:26 christos Exp $	*/
 
 /*
  * Copyright (c) 1995-96 Mats O Jansson.  All rights reserved.
@@ -24,9 +24,9 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <sys/cdefs.h>
+#include "port.h"
 #ifndef lint
-__RCSID("$NetBSD: mopchk.c,v 1.13 2011/08/30 19:49:11 joerg Exp $");
+__RCSID("$NetBSD: mopchk.c,v 1.14 2016/06/08 01:15:26 christos Exp $");
 #endif
 
 /*