diff --git a/math/oink/Makefile b/math/oink/Makefile
index 4e366d421d1d..0acc7592419d 100644
--- a/math/oink/Makefile
+++ b/math/oink/Makefile
@@ -1,28 +1,26 @@
 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>
diff --git a/math/oink/files/patch-src_lace.h b/math/oink/files/patch-src_lace.h
index 86d901ac1df4..f456cff65c0f 100644
--- a/math/oink/files/patch-src_lace.h
+++ b/math/oink/files/patch-src_lace.h
@@ -1,14 +1,14 @@
 --- src/lace.h.orig	2021-07-12 11:27:04 UTC
 +++ src/lace.h
 @@ -293,7 +293,11 @@ void lace_yield(WorkerP *__lace_worker, Task *__lace_d
  #endif
  
  #ifndef mfence
-+#ifdef __amd64__
++#if defined(__amd64__) || defined(__i386__)
  #define mfence() { asm volatile("mfence" ::: "memory"); }
 +#elif defined(__powerpc__)
 +#define mfence() { asm volatile("sync" ::: "memory"); }
 +#endif
  #endif
  
  /* Compiler specific branch prediction optimization */