diff --git a/dns/py-namebench/Makefile b/dns/py-namebench/Makefile
index 649cc3db98e5..5c26a2379e6e 100644
--- a/dns/py-namebench/Makefile
+++ b/dns/py-namebench/Makefile
@@ -1,50 +1,52 @@
 # Created by: Sahil Tandon <sahil@tandon.net>
 
 PORTNAME=	namebench
 PORTVERSION=	1.3.1
 PORTREVISION=	1
 CATEGORIES=	dns python benchmarks
 MASTER_SITES=	SF/bsdsrc/${.CURDIR:T} \
 		https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/${PORTNAME}/
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 DISTNAME=	${PORTNAME}-${PORTVERSION}-source
 
 MAINTAINER=	jgh@FreeBSD.org
 COMMENT=	Open Source DNS benchmark utility
 
 LICENSE=	APACHE20
 
+BROKEN=	incompatible with Python 3
+
 RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}Jinja2>=2.5.5:devel/py-Jinja2@${PY_FLAVOR} \
 	${PYTHON_PKGNAMEPREFIX}graphy>=1.0:graphics/py-graphy@${PY_FLAVOR} \
 	${PYTHON_PKGNAMEPREFIX}dnspython>=1.9.4:dns/py-dnspython@${PY_FLAVOR} \
 	${PYTHON_PKGNAMEPREFIX}httplib2>=0.6.0:www/py-httplib2@${PY_FLAVOR} \
 	${PYTHON_PKGNAMEPREFIX}simplejson>=2.1.6:devel/py-simplejson@${PY_FLAVOR}
 
 USES=	python:3.6+ tar:tgz
 
 .include <bsd.port.options.mk>
 
 .if ! ${PORT_OPTIONS:MX11}
 RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}tkinter>=2.7.1:x11-toolkits/py-tkinter@${PY_FLAVOR}
 .endif
 
 MAKE_ENV+=	NO_THIRD_PARTY=yes
 WRKSRC=	${WRKDIR}/${PORTNAME}-${PORTVERSION}
 
 PORTDOCS=	README.txt
 
 USE_PYTHON=	distutils autoplist
 
 PYDISTUTILS_INSTALLARGS+=	--install-data=${PREFIX}/share
 
 OPTIONS_DEFINE=	DOCS
 
 post-patch:
 	@${REINPLACE_CMD} -e 's,/usr/local,${PREFIX},' \
 		${WRKSRC}/libnamebench/util.py
 
 post-install:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	${INSTALL_DATA} ${WRKSRC}/${PORTDOCS} ${STAGEDIR}${DOCSDIR}
 
 .include <bsd.port.mk>