diff --git a/multimedia/mmsclient/Makefile b/multimedia/mmsclient/Makefile
--- a/multimedia/mmsclient/Makefile
+++ b/multimedia/mmsclient/Makefile
@@ -12,6 +12,9 @@
 
 LICENSE=	GPLv2
 
+DEPRECATED=	Abandoned upstream, Microsoft deprecated MMS in 2003
+EXPIRATION_DATE=2021-12-31
+
 GNU_CONFIGURE=	yes
 PLIST_FILES=	bin/mmsclient man/man1/mmsclient.1.gz