diff --git a/net/libmms/Makefile b/net/libmms/Makefile
index 5db9894ac829..b6d87a8a72b9 100644
--- a/net/libmms/Makefile
+++ b/net/libmms/Makefile
@@ -11,6 +11,9 @@ COMMENT=	Library for parsing mms:// and mmsh:// type network streams
 
 LICENSE=	LGPL21
 
+DEPRECATED=	Obsolete, Microsoft deprecated MMS protocol in favour of RTSP in 2003
+EXPIRATION_DATE=2022-09-30
+
 USES=		cpe gettext libtool pathfix pkgconfig
 CPE_VENDOR=	libmms_project
 GNU_CONFIGURE=	yes