diff --git a/textproc/toml-f/Makefile b/textproc/toml-f/Makefile
index dca5d918e27b..bbcb8885878b 100644
--- a/textproc/toml-f/Makefile
+++ b/textproc/toml-f/Makefile
@@ -1,22 +1,24 @@
 PORTNAME=	toml-f
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.3.0
 CATEGORIES=	textproc
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	TOML parser for data serialization and deserialization in Fortran
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE-MIT
 
+BROKEN_aarch64=	cannot find an intrinsic module named 'ieee_arithmetic'
+
 USES=		cmake:testing fortran
 USE_GITHUB=	yes
 USE_LDCONFIG=	yes
 
 CMAKE_ON=	BUILD_SHARED_LIBS
 CMAKE_TESTING_ON=	FREEBSD_BUILD_TESTS
 
 post-patch: # see https://github.com/toml-f/toml-f/issues/51
 	@${REINPLACE_CMD} -e 's|$${CMAKE_Fortran_COMPILER_ID}-$${CMAKE_Fortran_COMPILER_VERSION}||' ${WRKSRC}/config/CMakeLists.txt
 
 .include <bsd.port.mk>