Index: head/www/py-tornado6/Makefile
===================================================================
--- head/www/py-tornado6/Makefile	(revision 527582)
+++ head/www/py-tornado6/Makefile	(revision 527583)
@@ -1,27 +1,28 @@
 # Created by: Guixing Bai <khsing.cn@gmail.com>
 # $FreeBSD$
 
 PORTNAME=	tornado
 PORTVERSION=	6.0.3
 CATEGORIES=	www python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 PKGNAMESUFFIX=	6
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Python Web Server from FriendFeed
 
 LICENSE=	APACHE20
 
-CONFLICTS=	py[0-9]*-tornado-* py[0-9]*-tornado4-*
-
 USES=		python:3.5+
 USE_PYTHON=	autoplist distutils
+
+CONFLICTS_INSTALL=	${PYTHON_PKGNAMEPREFIX}tornado \
+			${PYTHON_PKGNAMEPREFIX}tornado4
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PYTHON_SITELIBDIR}/tornado/speedups.so
 
 do-test:
 	@cd ${WRKSRC} && ${PYTHON_CMD} -m tornado.test.runtests
 
 .include <bsd.port.mk>