Index: head/devel/py-smmap/Makefile
===================================================================
--- head/devel/py-smmap/Makefile	(revision 456448)
+++ head/devel/py-smmap/Makefile	(revision 456449)
@@ -1,17 +1,19 @@
 # $FreeBSD$
 
 PORTNAME=	smmap
 PORTVERSION=	0.9.0
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	rm@FreeBSD.org
 COMMENT=	Pure python sliding memory map manager
 
 LICENSE=	BSD3CLAUSE
 
+CONFLICTS_INSTALL=	${PYTHON_PKGNAMEPREFIX}smmap2
+
 USES=		python
 USE_PYTHON=	autoplist distutils
 
 .include <bsd.port.mk>