diff --git a/static/js/index.js b/static/js/index.js
index 7bb58e8..afbe7fa 100644
--- a/static/js/index.js
+++ b/static/js/index.js
@@ -123,7 +123,7 @@ class Game extends GameBasic {
 
         let that = this;
 
-        this.ws = new WebSocket(window.location.href);
+        this.ws = new WebSocket(origin);
 
         this.ws.addEventListener('message', function (e) { that.recv(e) });