diff --git a/devel/json-fortran/Makefile b/devel/json-fortran/Makefile
index ece3f6e774d5..7bd44c111cfa 100644
--- a/devel/json-fortran/Makefile
+++ b/devel/json-fortran/Makefile
@@ -1,22 +1,24 @@
 PORTNAME=	json-fortran
 DISTVERSION=	8.3.0-8
 DISTVERSIONSUFFIX=	-gd296de8a4
 CATEGORIES=	devel
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Modern Fortran JSON API
 WWW=		https://github.com/jacobwilliams/json-fortran/
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BROKEN_aarch64=	compilation fails: Cannot find an intrinsic module named 'ieee_arithmetic'
+
 USES=		cmake:testing fortran
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	jacobwilliams
 
 CMAKE_ON=	USE_GNU_INSTALL_CONVENTION
 
 # all tests fail, see https://github.com/jacobwilliams/json-fortran/issues/539
 
 .include <bsd.port.mk>