diff --git a/science/openbabel/Makefile b/science/openbabel/Makefile
index 1cde3a122d32..1ae575230669 100644
--- a/science/openbabel/Makefile
+++ b/science/openbabel/Makefile
@@ -1,69 +1,70 @@
 PORTNAME=	openbabel
 DISTVERSION=	3-1-1-178
 #DISTVERSIONSUFFIX=	-source
 DISTVERSIONSUFFIX=	-g2b211d6ac
 CATEGORIES=	science
 #MASTER_SITES=	https://github.com/openbabel/openbabel/releases/download/openbabel-${PORTVERSION:C/\./-/g}/
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Chemical toolbox designed to speak the many languages of chemical data
 WWW=		https://openbabel.org/wiki/Main_Page
 
 LICENSE=	GPLv2+
 
 BUILD_DEPENDS=	rapidjson>0:devel/rapidjson
 LIB_DEPENDS=	libmaeparser.so:science/maeparser	\
 		libcoordgen.so:science/coordgenlibs	\
 		libboost_thread.so:devel/boost-libs
 
 CONFLICTS_INSTALL=	babel
 
-USES=		cmake:testing compiler:c++11-lang eigen:3 gnome pkgconfig tar:bz2
+USES=		cmake:testing compiler:c++11-lang eigen:3 gnome perl5 pkgconfig tar:bz2
 USE_CXXSTD=	c++11
 USE_GNOME=	libxml2
 USE_LDCONFIG=	yes
 USE_GITHUB=	yes # temporary
+USE_PERL5=	build
 
 CMAKE_ON=	WITH_COORDGEN WITH_JSON OPENBABEL_USE_SYSTEM_RAPIDJSON WITH_MAEPARSER
 CMAKE_OFF=	ENABLE_TESTS PYTHON_BINDINGS
 CMAKE_TESTING_ON=	ENABLE_TESTS
 
 #WRKSRC=		${WRKDIR}/${PORTNAME}-${PORTVERSION}
 
 PLIST_SUB=	VERSION=${PORTVERSION:R}
 
 OPTIONS_DEFINE=		CAIRO GUI
 OPTIONS_DEFAULT=	CAIRO GUI
 OPTIONS_SUB=		yes
 
 CAIRO_DESC=		PNG support via cairo library
 CAIRO_USE=		GNOME=cairo
 
 GUI_CMAKE_BOOL=		BUILD_GUI
 GUI_CMAKE_ON=		-DwxWidgets_CONFIG_EXECUTABLE:STRING=${WX_CONFIG}
 GUI_USE=		WX=3.0
 
 .include <bsd.port.pre.mk>
 
 .if ${CHOSEN_COMPILER_TYPE} == gcc
 CXXFLAGS+=	-Wno-narrowing
 USE_CXXSTD=	c++11
 .endif
 
 pre-configure:
 	${REINPLACE_CMD} -e '/pkgconfig/s,$${LIB_INSTALL_DIR},libdata,' \
 		${WRKSRC}/CMakeLists.txt
 
 pre-configure-CAIRO-off:
 	${REINPLACE_CMD} -e '/find_package(Cairo)/d' \
 		${WRKSRC}/CMakeLists.txt
 
 post-install-PYTHON-on:
 	(cd ${STAGEDIR}${PREFIX} && ${PYTHON_CMD} ${PYTHON_LIBDIR}/compileall.py \
 		-d ${PREFIX} -f ${PYTHONPREFIX_SITELIBDIR:S,${PREFIX}/,,})
 	(cd ${STAGEDIR}${PREFIX} && ${PYTHON_CMD} -O ${PYTHON_LIBDIR}/compileall.py \
 		-d ${PREFIX} -f ${PYTHONPREFIX_SITELIBDIR:S,${PREFIX}/,,})
 
 # 2 tests fail, see https://github.com/openbabel/openbabel/issues/2604
 
 .include <bsd.port.post.mk>