diff --git a/archivers/py-sozipfile/Makefile b/archivers/py-sozipfile/Makefile
index bbc83c7e6afa..258dd228ff1b 100644
--- a/archivers/py-sozipfile/Makefile
+++ b/archivers/py-sozipfile/Makefile
@@ -15,8 +15,10 @@ BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}setuptools>=0:devel/py-setuptools@${PY_FLA
 		${PYTHON_PKGNAMEPREFIX}wheel>=0:devel/py-wheel@${PY_FLAVOR}
 
 USES=		python
-USE_PYTHON=	autoplist concurrent pep517
+USE_PYTHON=	autoplist concurrent pep517 unittest
 
 NO_ARCH=	yes
+TEST_ARGS=	discover -s tests
+TEST_ENV=	PYTHONPATH=${STAGEDIR}${PYTHON_SITELIBDIR}
 
 .include <bsd.port.mk>