diff --git a/databases/mysqlsniffer/Makefile b/databases/mysqlsniffer/Makefile
index 84b70e5ab4b4..50333e9d71ee 100644
--- a/databases/mysqlsniffer/Makefile
+++ b/databases/mysqlsniffer/Makefile
@@ -1,30 +1,32 @@
 # Created by: Frederic Hardy <frederic.hardy@mageekbox.net>
 
 PORTNAME=	mysqlsniffer
 PORTVERSION=	1.2
 CATEGORIES=	databases
 
 MAINTAINER=	frederic.hardy@mageekbox.net
 COMMENT=	Tcpdump clone specifically for MySQL
 
+DEPRECATED=	Development discontinued upstream, doesn't build on recent FreeBSD
+EXPIRATION_DATE=2021-10-30
 BROKEN_FreeBSD_13=	ld: error: duplicate symbol: decoded_len
 BROKEN_FreeBSD_14=	ld: error: duplicate symbol: decoded_len
 
 WRKSRC_SUBDIR=	${PORTNAME}
 
 PLIST_FILES=	bin/mysqlsniffer
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	daniel-nichter
 GH_PROJECT=	hackmysql.com
 GH_TAGNAME=	ddb6f92
 
 do-build:
 	${CC} ${CFLAGS} -lpcap -o ${WRKSRC}/${PORTNAME} \
 		${WRKSRC}/mysqlsniffer.c ${WRKSRC}/packet_handlers.c \
 			${WRKSRC}/misc.c
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/${PORTNAME} ${STAGEDIR}${PREFIX}/bin
 
 .include <bsd.port.mk>