Index: head/security/knocker/Makefile
===================================================================
--- head/security/knocker/Makefile	(revision 565900)
+++ head/security/knocker/Makefile	(revision 565901)
@@ -1,17 +1,20 @@
 # Created by: Patrick Li <pat@databits.net>
 # $FreeBSD$
 
 PORTNAME=	knocker
 PORTVERSION=	0.7.1
 CATEGORIES=	security net
 MASTER_SITES=	SF
 
 MAINTAINER=	sbz@FreeBSD.org
 COMMENT=	Simple and easy to use TCP only port scanner (Console version)
 
+BROKEN_FreeBSD_13=	ld: error: duplicate symbol: knocker_core_last_hostip
+BROKEN_FreeBSD_14=	ld: error: duplicate symbol: knocker_core_last_hostip
+
 GNU_CONFIGURE=	yes
 
 PLIST_FILES=	bin/knocker \
 		man/man1/knocker.1.gz
 
 .include <bsd.port.mk>