diff --git a/science/py-gemmi/Makefile b/science/py-gemmi/Makefile
index 15f4946eaa81..0e82aca8092b 100644
--- a/science/py-gemmi/Makefile
+++ b/science/py-gemmi/Makefile
@@ -1,29 +1,29 @@
 PORTNAME=	gemmi
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.5.7
-CATEGORIES=	science
+CATEGORIES=	science python
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Macromolecular crystallography library and utilities
 WWW=		https://gemmi.readthedocs.io/en/latest/
 
 LICENSE=	MPL20
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pip>0:devel/py-pip@${PY_FLAVOR} \
 		pybind11>=2.6:devel/pybind11
 
 USES=		cmake compiler:c++17-lang python
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	project-gemmi
 
 CMAKE_ON=	USE_PYTHON
 
 PLIST_FILES=	${PYTHON_SITELIBDIR}/gemmi${PYTHON_EXT_SUFFIX}.so
 
 do-test:
 	@cd ${WRKSRC} && ${PYTHON_CMD} -m unittest discover -v tests/
 
 .include <bsd.port.mk>