diff --git a/graphics/rubygem-gruff/Makefile b/graphics/rubygem-gruff/Makefile
index c0aea8e037ab..e38698862a05 100644
--- a/graphics/rubygem-gruff/Makefile
+++ b/graphics/rubygem-gruff/Makefile
@@ -1,21 +1,26 @@
 # Created by: ijliao
 # $FreeBSD$
 
 PORTNAME=	gruff
 PORTVERSION=	0.6.0
+PORTREVISION=	1
 CATEGORIES=	graphics rubygems
 MASTER_SITES=	RG
 
 MAINTAINER=	ruby@FreeBSD.org
 COMMENT=	Beautiful graphing library for Ruby using RMagick
 
 LICENSE=	MIT
+LICENSE_FILE=	${WRKSRC}/MIT-LICENSE
 
 RUN_DEPENDS=	rubygem-rmagick>=2.13.4:${PORTSDIR}/graphics/rubygem-rmagick
 
 NO_ARCH=	yes
 USE_RUBY=	yes
 USE_RUBYGEMS=	yes
 RUBYGEM_AUTOPLIST=	yes
+USES=		shebangfix
+SHEBANG_FILES=	test/image_compare.rb
+ruby_OLD_CMD=	ruby
 
 .include <bsd.port.mk>