diff --git a/games/flightgear-terragear/Makefile b/games/flightgear-terragear/Makefile
index c24c785ff634..0ef22386d63d 100644
--- a/games/flightgear-terragear/Makefile
+++ b/games/flightgear-terragear/Makefile
@@ -1,33 +1,35 @@
 PORTNAME=	flightgear-terragear
 PORTVERSION=	20171007
 PORTREVISION=	17
 CATEGORIES=	games
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Tools for building scenery for the FlightGear project
 WWW=		https://github.com/FlightGear/terragear
 
 LICENSE=	GPLv2
 
 BROKEN=		does not build: use of undeclared identifier 'sgClearWriteError'
+DEPRECATED=	Broken since 2021
+EXPIRATION_DATE=	2023-03-21
 
 BUILD_DEPENDS=	cgal>0:math/cgal
 LIB_DEPENDS=	libgdal.so:graphics/gdal \
 		libmpfr.so:math/mpfr \
 		libgmp.so:math/gmp \
 		libboost_thread.so:devel/boost-libs \
 		libboost_system.so:devel/boost-libs \
 		libboost_chrono.so:devel/boost-libs \
 		libboost_date_time.so:devel/boost-libs \
 		libboost_atomic.so:devel/boost-libs \
 		libtiff.so:graphics/tiff \
 		libSimGearCore.so:devel/simgear
 
 USES=	cmake compiler:c++11-lang
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	flightgear
 GH_PROJECT=	terragear
 GH_TAGNAME=	5b5e5fc
 
 .include <bsd.port.mk>