diff --git a/net/libopennet/Makefile b/net/libopennet/Makefile
index a16d8f479329..301840a8b475 100644
--- a/net/libopennet/Makefile
+++ b/net/libopennet/Makefile
@@ -2,8 +2,7 @@ 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