diff --git a/science/py-libgetar/Makefile b/science/py-libgetar/Makefile
index df16044727d8..aef8a63fffd9 100644
--- a/science/py-libgetar/Makefile
+++ b/science/py-libgetar/Makefile
@@ -1,29 +1,32 @@
 PORTNAME=	libgetar
 DISTVERSIONPREFIX=	v
 DISTVERSION=	1.1.3
 CATEGORIES=	science # physics
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Library to read and write GEneric Trajectory ARchives
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 PY_DEPENDS=	${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}breathe>0:devel/py-breathe@${PY_FLAVOR}
 BUILD_DEPENDS=	${PY_DEPENDS}
 RUN_DEPENDS=	${PY_DEPENDS}
 
 USES=		python
-USE_PYTHON=	distutils cython autoplist pytest # tests fail, see https://github.com/glotzerlab/libgetar/issues/29
+USE_PYTHON=	distutils cython autoplist
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	glotzerlab
 
-TEST_ENV=      ${MAKE_ENV} PYTHONPATH=${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}
+TEST_ENV=	${MAKE_ENV} PYTHONPATH=${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}
 
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PYTHON_SITELIBDIR}/gtar/_gtar${PYTHON_EXT_SUFFIX}.so
 
+do-test:
+	@cd ${WRKSRC}/test && ${SETENV} ${TEST_ENV} ${PYTHON_CMD} -m unittest discover
+
 .include <bsd.port.mk>