diff --git a/net/libopennet/Makefile b/net/libopennet/Makefile
index a16d8f479329..301840a8b475 100644
--- a/net/libopennet/Makefile
+++ b/net/libopennet/Makefile
@@ -1,25 +1,24 @@
 PORTNAME=	libopennet
 PORTVERSION=	0.9.9
 PORTREVISION=	2
 CATEGORIES=	net
-MASTER_SITES=	http://www.rkeene.org/files/oss/libopennet/ \
-		http://www.cs.nctu.edu.tw/~gslin/files/
+MASTER_SITES=	https://www.rkeene.org/files/oss/libopennet/
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Library for opening files over a network
 WWW=		https://www.rkeene.org/oss/libopennet/
 
 LICENSE=	LGPL21 GPLv2 # net.c header mentions GPL
 LICENSE_COMB=	multi
 LICENSE_FILE_LGPL21=	${WRKSRC}/LICENSE
 
 GNU_CONFIGURE=	yes
 GNU_CONFIGURE_MANPREFIX=${PREFIX}/share
 PLIST_SUB=	PORTVERSION=${PORTVERSION}
 USES=		gmake
 USE_LDCONFIG=	yes
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libopennet.so
 
 .include <bsd.port.mk>