diff --git a/net/libmms/Makefile b/net/libmms/Makefile
index 5db9894ac829..b6d87a8a72b9 100644
--- a/net/libmms/Makefile
+++ b/net/libmms/Makefile
@@ -1,22 +1,25 @@
 # Created by: Koop Mast <kwm@FreeBSD.org>
 
 PORTNAME=	libmms
 PORTVERSION=	0.6.4
 PORTREVISION=	1
 CATEGORIES=	net
 MASTER_SITES=	SF
 
 MAINTAINER=	kwm@FreeBSD.org
 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
 CPPFLAGS+=	-I${LOCALBASE}/include
 LDFLAGS+=	-L${LOCALBASE}/lib
 USE_LDCONFIG=	yes
 INSTALL_TARGET=	install-strip
 
 .include <bsd.port.mk>