diff --git a/science/dalton/Makefile b/science/dalton/Makefile
index 95750c0b7434..fc472c17e205 100644
--- a/science/dalton/Makefile
+++ b/science/dalton/Makefile
@@ -1,35 +1,37 @@
 PORTNAME=	dalton
 DISTVERSION=	2020.0
 CATEGORIES=	science
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Powerful molecular electronic structure program for quantum chemistry
 WWW=		https://daltonprogram.org/
 
 LICENSE=	LGPL21
 
+BROKEN_armv7=	fortran runs out of memory
+
 LIB_DEPENDS=	liblapack.so:math/lapack \
 		libopenblas.so:math/openblas
 RUN_DEPENDS=	bash:shells/bash
 
 USES=		cmake:noninja fortran python:build shebangfix
 SHEBANG_FILES=	dalton.in
 
 USE_GITLAB=	yes
 GL_COMMIT=	66052b3af5ea7225e31178bf9a8b031913c72190
 GL_TUPLE=	bingao:gen1int:1e4148ecd676761b3399801acba443925a1fee6b:gen1int/external/gen1int \
 		pe-software:pelib-public:cf49a6e04fdca09af6245fb68a36d20b68552ace:pelib/external/pelib
 
 USE_GITHUB=	nodefault
 GH_TUPLE=	cstein:qfitlib:1acdc9863fdeae2cdbc7f5a599413257a095b8ad:qfitlib/external/qfitlib
 
 BINARY_ALIAS=	python=${PYTHON_CMD}
 
 post-install:
 	@${MV} ${STAGEDIR}${PREFIX}/${PORTNAME} ${STAGEDIR}${DATADIR}
 	@${REINPLACE_CMD} -i '' 's|%%SCRIPT_DIR%%|${DATADIR}|; s|%%PREFIX%%|${PREFIX}|' ${STAGEDIR}${DATADIR}/${PORTNAME}
 	@${MV} ${STAGEDIR}${DATADIR}/${PORTNAME}* ${STAGEDIR}${PREFIX}/bin/
 	@cd ${STAGEDIR}${DATADIR}/tools && ${STRIP_CMD} aces2dalton distances FChk2HES labread xyz2dalton
 	@cd ${STAGEDIR}${DATADIR} && ${RM} -r tools/CMakeFiles tools/Makefile tools/cmake_install.cmake
 
 .include <bsd.port.mk>