diff --git a/textproc/rubygem-amatch/Makefile b/textproc/rubygem-amatch/Makefile
index d44aac5089e8..4a1c2e093df8 100644
--- a/textproc/rubygem-amatch/Makefile
+++ b/textproc/rubygem-amatch/Makefile
@@ -10,6 +10,7 @@ MAINTAINER=	ruby@FreeBSD.org
 COMMENT=	Ruby library for approximate string matching and searching
 
 LICENSE=	GPLv2
+LICENSE_FILE=	${WRKSRC}/COPYING
 
 RUN_DEPENDS=	rubygem-tins>=1.0:${PORTSDIR}/devel/rubygem-tins