Index: head/games/libretro-picodrive/Makefile
===================================================================
--- head/games/libretro-picodrive/Makefile	(revision 565134)
+++ head/games/libretro-picodrive/Makefile	(revision 565135)
@@ -1,31 +1,34 @@
 # $FreeBSD$
 
 PORTNAME=	libretro-picodrive
 PORTVERSION=	0.20200504
 CATEGORIES=	games
 
 MAINTAINER=	menelkir@itroll.org
 COMMENT=	Fast MegaDrive/MegaCD/32X emulator
 
-LICENSE=	PD
+LICENSE=	MAME-License
+LICENSE_NAME=	MAME license
+LICENSE_FILE=	${WRKSRC}/COPYING
+LICENSE_PERMS=	dist-mirror no-dist-sell pkg-mirror no-pkg-sell auto-accept
 
 ONLY_FOR_ARCHS=		amd64 i386
 ONLY_FOR_ARCHS_REASON=	all archs except x86 report error: unsupported arch
 
 USES=		compiler:c++11-lib gmake
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	libretro
 GH_PROJECT=	picodrive
 GH_TAGNAME=	600894e
 
 PLIST_FILES=	lib/libretro/picodrive_libretro.so
 
 MAKEFILE=	Makefile.libretro
 
 do-install:
 	${MKDIR} ${STAGEDIR}/${PREFIX}/lib/libretro;
 	${INSTALL_LIB} ${WRKSRC}/picodrive_libretro.so ${STAGEDIR}/${PREFIX}/lib/libretro;
 
 .include <bsd.port.mk>