diff --git a/devel/lace/Makefile b/devel/lace/Makefile
index d239f4190fb4..d9467c428a23 100644
--- a/devel/lace/Makefile
+++ b/devel/lace/Makefile
@@ -1,32 +1,34 @@
 PORTNAME=	lace
 DISTVERSIONPREFIX=	v
 DISTVERSION=	2.0.2
 PORTREVISION=	1
 CATEGORIES=	devel
 PKGNAMESUFFIX=	-work-stealing
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Implementation of work-stealing in C
 WWW=		https://github.com/trolando/lace
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BROKEN_i386=	compilation fails: error: static assertion failed due to requirement '(sizeof(struct _lace_task) % 64) == 0': lace_task size should be a multiple of LACE_CACHE_LINE_SIZE
+
 USES=		cmake:testing
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	trolando
 
 CMAKE_ON=		BUILD_SHARED_LIBS
 CMAKE_OFF=		LACE_BUILD_TESTS
 CMAKE_TESTING_ON=	LACE_BUILD_TESTS
 
 PORTSCOUT=	limit:^.*[0-9]+\.[0-9]+\.[0-9]+$$ # prevent tags like mucocos_2014_ri
 
 pre-configure: # see discussion in https://github.com/trolando/lace/issues/16
 	@${REINPLACE_CMD} -e 's,memory_order_[[:alnum:]_]*,memory_order_seq_cst,g' \
 		${WRKSRC}/src/*.[ch] ${WRKSRC}/src/lace.sh
 
 # tests as of 2.0.2: 100% tests passed, 0 tests failed out of 2
 
 .include <bsd.port.mk>