diff --git a/devel/py-asynctest/Makefile b/devel/py-asynctest/Makefile
index a79016ef37ae..432932907c49 100644
--- a/devel/py-asynctest/Makefile
+++ b/devel/py-asynctest/Makefile
@@ -1,22 +1,22 @@
 # Created by: Po-Chuan Hsieh <sunpoet@FreeBSD.org>
 
 PORTNAME=	asynctest
 PORTVERSION=	0.13.0
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Enhance unittest for testing asyncio libraries
 
 LICENSE=	APACHE20
 
+TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}mock>=0:devel/py-mock@${PY_FLAVOR}
+
 USES=		python:3.5+
-USE_PYTHON=	autoplist concurrent distutils
+USE_PYTHON=	autoplist concurrent distutils unittest
 
 NO_ARCH=	yes
-
-do-test:
-	cd ${WRKSRC} && ${PYTHON_CMD} -m unittest -v test
+TEST_ARGS=	discover -s test
 
 .include <bsd.port.mk>