diff --git a/share/mk/bsd.port.mk b/share/mk/bsd.port.mk
index f9c26d3bf620..877628dd5061 100644
--- a/share/mk/bsd.port.mk
+++ b/share/mk/bsd.port.mk
@@ -1,2 +1,4 @@
+# $FreeBSD$
+
 PORTSDIR?=	/usr/ports
 .include	"${PORTSDIR}/Mk/bsd.port.mk"
diff --git a/share/mk/bsd.port.subdir.mk b/share/mk/bsd.port.subdir.mk
index 0647e6ab8254..24f252148bae 100644
--- a/share/mk/bsd.port.subdir.mk
+++ b/share/mk/bsd.port.subdir.mk
@@ -1,2 +1,4 @@
+# $FreeBSD$
+
 PORTSDIR?=	/usr/ports
 .include	"${PORTSDIR}/Mk/bsd.port.subdir.mk"