diff --git a/devel/rubygem-io-wait01/Makefile b/devel/rubygem-io-wait01/Makefile
index 0f84f9a49069..3c7fab3c7f29 100644
--- a/devel/rubygem-io-wait01/Makefile
+++ b/devel/rubygem-io-wait01/Makefile
@@ -1,21 +1,23 @@
 # Created by: Po-Chuan Hsieh <sunpoet@FreeBSD.org>
 
 PORTNAME=	io-wait
 PORTVERSION=	0.1.0
 CATEGORIES=	devel rubygems
 MASTER_SITES=	RG
 PKGNAMESUFFIX=	01
 
 MAINTAINER=	mfechner@FreeBSD.org
 COMMENT=	Wait until IO is readable or writable without blocking
 
 LICENSE=	BSD2CLAUSE RUBY
 LICENSE_COMB=	dual
 LICENSE_FILE_RUBY=	${WRKSRC}/COPYING
 
 USES=		gem
 USE_RUBY=	yes
 
+NO_ARCH=	yes
+
 PORTSCOUT=	limit:^0\.1\.
 
 .include <bsd.port.mk>