diff --git a/devel/py-magic/Makefile b/devel/py-magic/Makefile
index 9037d8c36e62..9bb4c8611c49 100644
--- a/devel/py-magic/Makefile
+++ b/devel/py-magic/Makefile
@@ -15,6 +15,9 @@ COMMENT=	Python module for determining file type
 
 LICENSE=	BSD2CLAUSE
 
+# both install module as magic.py
+CONFLICTS=	${PYTHON_PKGNAMEPREFIX}python-magic-*
+
 USES=		python
 USE_PYTHON=	distutils autoplist
 
diff --git a/devel/py-python-magic/Makefile b/devel/py-python-magic/Makefile
index d68a8f1984c0..ca226b4c7649 100644
--- a/devel/py-python-magic/Makefile
+++ b/devel/py-python-magic/Makefile
@@ -12,6 +12,9 @@ COMMENT=	File type identification using libmagic
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+# both install module as magic.py
+CONFLICTS=	${PYTHON_PKGNAMEPREFIX}magic-*
+
 USES=		python
 USE_GITHUB=	yes
 USE_PYTHON=	autoplist distutils