diff --git a/biology/star/Makefile b/biology/star/Makefile
index 07a68f031873..fc32ddebc58b 100644
--- a/biology/star/Makefile
+++ b/biology/star/Makefile
@@ -1,47 +1,47 @@
 PORTNAME=	STAR
 DISTVERSION=	2.7.10b
 CATEGORIES=	biology
 PKGNAMEPREFIX=	rna-
 
 MAINTAINER=	jwb@FreeBSD.org
 COMMENT=	Spliced Transcripts Alignment to a Reference
 WWW=		https://github.com/alexdobin/STAR
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKDIR}/STAR-${DISTVERSION}/LICENSE
 
-NOT_FOR_ARCHS=	i386 powerpc
-NOT_FOR_ARCHS_REASON=Needs 16+ GiB RAM for typical eukaryotic genome
+NOT_FOR_ARCHS=		armv6 armv7 i386 mips powerpc powerpcspe
+NOT_FOR_ARCHS_REASON=	Requires 64-bit processor
 .if !exists(/usr/include/omp.h)
 BROKEN=		requires OpenMP support that is missing on this architecture
 .endif
 
 LIB_DEPENDS=	libhts.so:biology/htslib
 
 USES=		compiler:c++11-lang gmake localbase:ldflags
 USE_GITHUB=	yes
 GH_ACCOUNT=	alexdobin
 
 WRKSRC_SUBDIR=	source
 MAKE_FLAGS=	HTSLIB=''
 
 PLIST_FILES=	bin/STAR
 
 post-patch:
 	${RM} -rf ${WRKSRC}/htslib
 	${REINPLACE_CMD} \
 		-e 's|"htslib/htslib/sam.h"|<htslib/sam.h>|g' \
 		-e 's|"htslib/htslib/kstring.h"|<htslib/kstring.h>|g' \
 		-e 's|"htslib/htslib/bgzf.h"|<htslib/bgzf.h>|g' \
 		${WRKSRC}/BAMfunctions.cpp \
 		${WRKSRC}/IncludeDefine.h \
 		${WRKSRC}/STAR.cpp \
 		${WRKSRC}/bamRemoveDuplicates.cpp \
 		${WRKSRC}/bam_cat.c \
 		${WRKSRC}/bam_cat.h \
 		${WRKSRC}/signalFromBAM.h
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/STAR ${STAGEDIR}${PREFIX}/bin
 
 .include <bsd.port.mk>