diff --git a/net/ntp-devel/Makefile b/net/ntp-devel/Makefile
index 49e7f0f09d69..cf547f8de0e9 100644
--- a/net/ntp-devel/Makefile
+++ b/net/ntp-devel/Makefile
@@ -12,6 +12,8 @@ DISTNAME=	${PORTNAME}-dev-${PORTVERSION}-RC
 MAINTAINER=	cy@FreeBSD.org
 COMMENT=	The Network Time Protocol Distribution
 
+FORBIDDEN=	http://www.kb.cert.org/vuls/id/852879
+
 GNU_CONFIGURE=	yes
 OPTIONS_SUB=	yes
 USES=		pathfix shebangfix libtool