diff --git a/math/ocaml-num/Makefile b/math/ocaml-num/Makefile
index 4b2387b1399f..a9b4ef234367 100644
--- a/math/ocaml-num/Makefile
+++ b/math/ocaml-num/Makefile
@@ -1,23 +1,29 @@
 PORTNAME=	num
 PORTVERSION=	1.4
 DISTVERSIONPREFIX=	v
 PORTREVISION=	3
 CATEGORIES=	math
 PKGNAMEPREFIX=	ocaml-
 
 MAINTAINER=	danfe@FreeBSD.org
 COMMENT=	Legacy library for arbitrary-precision arithmetic
 WWW=		https://github.com/ocaml/num
 
 LICENSE=	LGPL21
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USES=		gmake ocaml
 USE_GITHUB=	yes
 GH_ACCOUNT=	ocaml
 
 MAKE_ENV=	OCAMLFIND_DESTDIR="${STAGEDIR}${OCAMLFIND_DESTDIR}"
 MAKE_JOBS_UNSAFE=	yes
 TEST_TARGET=	test
 
+.include <bsd.port.options.mk>
+
+.if ${ARCH} == powerpc
+LLD_UNSAFE=	yes
+.endif
+
 .include <bsd.port.mk>