diff --git a/science/libcifpp/Makefile b/science/libcifpp/Makefile
index ef1a1b079566..60d38f6f6d02 100644
--- a/science/libcifpp/Makefile
+++ b/science/libcifpp/Makefile
@@ -1,36 +1,38 @@
 PORTNAME=	libcifpp
 DISTVERSIONPREFIX=	v
 DISTVERSION=	5.0.3
 CATEGORIES=	science
 MASTER_SITES=	ftp://ftp.wwpdb.org/pub/pdb/data/monomers/:components
 DISTFILES=	components.cif.gz:components
 DIST_SUBDIR=	${PORTNAME}-${PORTVERSION}
 EXTRACT_ONLY=	${GH_ACCOUNT}-${GH_PROJECT}-${DISTVERSIONFULL}_GH0${EXTRACT_SUFX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Library to manipulate mmCIF and PDB files
 WWW=		https://github.com/PDB-REDO/libcifpp
 
 LICENSE=	BSD2CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BROKEN_i386=	compilation fails: static_assert failed due to requirement 'sizeof(cif::item_value) == 16', see https://github.com/PDB-REDO/libcifpp/issues/25
+
 LIB_DEPENDS=	libboost_iostreams.so:devel/boost-libs
 RUN_DEPENDS=	bash:shells/bash
 
 USES=		cmake:testing compiler:c++17-lang shebangfix
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	PDB-REDO
 
 SHEBANG_FILES=	tools/update-libcifpp-data.in
 
 CMAKE_ON=	BUILD_SHARED_LIBS
 CMAKE_ARGS=	-DDISTDIR_FULL=${DISTDIR}/${DIST_SUBDIR}
 CMAKE_TESTING_ON=	ENABLE_TESTING
 
 post-install:
 	@cd ${STAGEDIR}${PREFIX} && \
 		${RM} -r var etc/libcifpp etc/periodic
 
 .include <bsd.port.mk>