diff --git a/calibre-web.subdomain.conf.sample b/calibre-web.subdomain.conf.sample
index fa2361e..a154d0c 100644
--- a/calibre-web.subdomain.conf.sample
+++ b/calibre-web.subdomain.conf.sample
@@ -54,5 +54,6 @@ server {
         set $upstream_proto http;
         proxy_pass $upstream_proto://$upstream_app:$upstream_port;
         proxy_set_header X-Scheme $scheme;
+	proxy_redirect https://$host/ https://$host:selfdefined port number/;#here use your self-defined port number, so it could redirect to other link then still keep self defined port number.
     }
 }