diff --git a/math/oink/Makefile b/math/oink/Makefile
index 0acc7592419d..4e366d421d1d 100644
--- a/math/oink/Makefile
+++ b/math/oink/Makefile
@@ -1,26 +1,28 @@
 PORTNAME=	oink
 DISTVERSION=	g20210704
 CATEGORIES=	math
 
 PATCH_SITES=	https://github.com/${GH_ACCOUNT}/${PORTNAME}/commit/
 PATCHFILES=	cd8c62bc1900ffee6d933fa31cbdd954560c286b.patch:-p1 # Fix build on FreeBSD
 PATCHFILES+=	a5c10784a472c42bab5a4df0ef29799011bc30b1.patch:-p1 # Fix installed cmake file path
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Modern parity game solvers written in C++
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BROKEN_i386=	error: use of undeclared identifier 'mfence'
+
 LIB_DEPENDS=	libboost_iostreams.so:devel/boost-libs
 
 USES=		cmake:testing
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	trolando
 GH_TAGNAME=	c1259fe
 
 CMAKE_ON=	BUILD_SHARED_LIBS
 
 .include <bsd.port.mk>