diff --git a/devel/rubygem-murmurhash3/Makefile b/devel/rubygem-murmurhash3/Makefile
index 7db165cdaf51..103cce9cee7f 100644
--- a/devel/rubygem-murmurhash3/Makefile
+++ b/devel/rubygem-murmurhash3/Makefile
@@ -9,6 +9,8 @@ MASTER_SITES=	RG
 MAINTAINER=	ruby@FreeBSD.org
 COMMENT=	Implementation of murmur3 hashing function
 
+LICENSE=	MIT
+
 USE_RUBY=	yes
 USES=		gem