diff --git a/math/add/Makefile b/math/add/Makefile
index bc1920422118..88b92724ee39 100644
--- a/math/add/Makefile
+++ b/math/add/Makefile
@@ -1,21 +1,24 @@
 PORTNAME=	add
 PORTVERSION=	20230205
 CATEGORIES=	math
 MASTER_SITES=	ftp://dickey.his.com/add/
 
 MAINTAINER=	eduardo@FreeBSD.org
 COMMENT=	Full-screen editing calculator
 WWW=		https://dickey.his.com/add/add.html
 
+LICENSE=	MIT
+LICENSE_FILE=	${WRKSRC}/COPYING
+
 USES=		ncurses tar:tgz
 GNU_CONFIGURE=	yes
 
 MAKEFILE=	makefile
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/add ${STAGEDIR}${PREFIX}/bin
 	${INSTALL_MAN} ${WRKSRC}/add.1 ${STAGEDIR}${MANPREFIX}/man/man1
 	@${MKDIR} ${STAGEDIR}${DATADIR}
 	${INSTALL_DATA} ${WRKSRC}/add.hlp ${STAGEDIR}${DATADIR}
 
 .include <bsd.port.mk>