Index: head/sysutils/intel-undervolt/Makefile
===================================================================
--- head/sysutils/intel-undervolt/Makefile	(revision 498668)
+++ head/sysutils/intel-undervolt/Makefile	(revision 498669)
@@ -1,34 +1,37 @@
 # $FreeBSD$
 
 PORTNAME=	intel-undervolt
 DISTVERSION=	1.5-7
 DISTVERSIONSUFFIX=	-g66cfb65
 CATEGORIES=	sysutils
 
 MAINTAINER=	greg@unrelenting.technology
 COMMENT=	Intel CPU undervolting tool
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/COPYING
 
+ONLY_FOR_ARCHS=		amd64 i386
+ONLY_FOR_ARCHS_REASON=	specifically for Haswell and newer Intel CPUs
+
 RUN_DEPENDS=	bash:shells/bash
 
 USES=		gmake
 USE_GITHUB=	yes
 GH_ACCOUNT=	kitsunyan
 
 MAKE_ARGS=	CC="${CC}" SYSCONFDIR="${PREFIX}/etc"
 
 PLIST_FILES=	bin/${PORTNAME} \
 		"@sample etc/${PORTNAME}.conf.sample"
 
 post-patch:
 	${REINPLACE_CMD} "s|/bin/bash|${LOCALBASE}/bin/bash|g" ${WRKSRC}/config.c
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/${PORTNAME} \
 		${STAGEDIR}${PREFIX}/bin/
 	${INSTALL_DATA} ${WRKSRC}/${PORTNAME}.conf \
 		${STAGEDIR}${PREFIX}/etc/${PORTNAME}.conf.sample
 
 .include <bsd.port.mk>