diff --git a/devel/rubygem-rotp/Makefile b/devel/rubygem-rotp/Makefile
index 8428b83b6aed..3e32c10c351b 100644
--- a/devel/rubygem-rotp/Makefile
+++ b/devel/rubygem-rotp/Makefile
@@ -1,20 +1,21 @@
 # Created by: Torsten Zuhlsdorff <ports@toco-domains.de>
 
 PORTNAME=	rotp
 PORTVERSION=	6.2.0
 CATEGORIES=	devel rubygems
 MASTER_SITES=	RG
 
 MAINTAINER=	ruby@FreeBSD.org
 COMMENT=	Ruby library for generating one time passwords
 
 LICENSE=	MIT
+LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USES=		gem
 USE_RUBY=	yes
 
 NO_ARCH=	yes
 
 PLIST_FILES=	bin/rotp
 
 .include <bsd.port.mk>