diff --git a/devel/py-resolvelib/Makefile b/devel/py-resolvelib/Makefile
index f09322dd8a4d..3a0fcea7698f 100644
--- a/devel/py-resolvelib/Makefile
+++ b/devel/py-resolvelib/Makefile
@@ -1,20 +1,20 @@
 PORTNAME=	resolvelib
 DISTVERSION=	0.8.1
 PORTREVISION=	1
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	0mp@FreeBSD.org
 COMMENT=	Resolve abstract dependencies into concrete ones
 
 LICENSE=	ISCL
 
 USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent distutils
 
-CONFLICTS_INSTALL=	py${PYTHON_SUFFIX}-${PORTNAME}05 py${PYTHON_SUFFIX}-${PORTNAME}07
+CONFLICTS_INSTALL=	${PYTHON_PKGNAMEPREFIX}-${PORTNAME}05 ${PYTHON_PKGNAMEPREFIX}-${PORTNAME}07
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>
diff --git a/devel/py-resolvelib05/Makefile b/devel/py-resolvelib05/Makefile
index 588fb22c4f03..4fb9feafed4a 100644
--- a/devel/py-resolvelib05/Makefile
+++ b/devel/py-resolvelib05/Makefile
@@ -1,23 +1,23 @@
 PORTNAME=	resolvelib
 DISTVERSION=	0.5.5
 PORTREVISION=	1
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 PKGNAMESUFFIX=	05
 
 MAINTAINER=	0mp@FreeBSD.org
 COMMENT=	Resolve abstract dependencies into concrete ones
 
 LICENSE=	ISCL
 
 USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent distutils
 
-CONFLICTS_INSTALL=	py${PYTHON_SUFFIX}-${PORTNAME} py${PYTHON_SUFFIX}-${PORTNAME}07
+CONFLICTS_INSTALL=	${PYTHON_PKGNAMEPREFIX}-${PORTNAME} ${PYTHON_PKGNAMEPREFIX}-${PORTNAME}07
 
 NO_ARCH=	yes
 
 PORTSCOUT=	limit:^0\.5\.
 
 .include <bsd.port.mk>
diff --git a/devel/py-resolvelib07/Makefile b/devel/py-resolvelib07/Makefile
index c6402ac4f02a..d83623c5c595 100644
--- a/devel/py-resolvelib07/Makefile
+++ b/devel/py-resolvelib07/Makefile
@@ -1,22 +1,22 @@
 PORTNAME=	resolvelib
 DISTVERSION=	0.7.1
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 PKGNAMESUFFIX=	07
 
 MAINTAINER=	0mp@FreeBSD.org
 COMMENT=	Resolve abstract dependencies into concrete ones
 
 LICENSE=	ISCL
 
 USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent distutils
 
-CONFLICTS_INSTALL=	py${PYTHON_SUFFIX}-${PORTNAME} py${PYTHON_SUFFIX}-${PORTNAME}05
+CONFLICTS_INSTALL=	${PYTHON_PKGNAMEPREFIX}-${PORTNAME} ${PYTHON_PKGNAMEPREFIX}-${PORTNAME}05
 
 NO_ARCH=	yes
 
 PORTSCOUT=	limit:^0\.7\.
 
 .include <bsd.port.mk>