diff --git a/audio/mac/Makefile b/audio/mac/Makefile
index 4f7381984707..be19fb3c8d1d 100644
--- a/audio/mac/Makefile
+++ b/audio/mac/Makefile
@@ -14,17 +14,21 @@ DISTNAME=	${PORTNAME}-3.99-u4-b5
 MAINTAINER=	infofarmer@FreeBSD.org
 COMMENT=	Monkey's Audio lossless codec
 
-BUILD_DEPENDS=	yasm:${PORTSDIR}/devel/yasm
-
 USE_AUTOTOOLS=	libtool:15
 USE_LDCONFIG=	yes
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--disable-static
 
+.include <bsd.port.pre.mk>
+
+.if ${ARCH} == "i386" || ${ARCH} == "amd64"
+BUILD_DEPENDS+=	yasm:${PORTSDIR}/devel/yasm
+.endif
+
 post-patch:
 	@${REINPLACE_CMD} -e 's|-O3||' ${WRKSRC}/configure
 #	@${REINPLACE_CMD} -e '/GetInfo/s|intptr_t|long|g' ${WRKSRC}/src/MACLib/*.*
 #	@${REINPLACE_CMD} -e 's|wcsnicmp|wcsncmp|g;s|wcsicmp|wcscmp|g;s|_wcsicmp|wcscmp|g;s|\.__pos||g' \
 #		${WRKSRC}/src/MACLib/*.* ${WRKSRC}/src/Shared/*.*
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>