diff --git a/index.html b/index.html
index a3058a9..cc74695 100644
--- a/index.html
+++ b/index.html
@@ -28,7 +28,7 @@ <h1>Chat</h1>
     chat.appendChild(line);
   }
 
-  var socket = new WebSocket('ws://127.0.0.1/chat');
+  var socket = new WebSocket('ws://' + window.location.hostname + '/chat');
 
   socket.onopen = function() {
     writeLine('connected');
@@ -44,4 +44,4 @@ <h1>Chat</h1>
 
 </script>
 </body>
-</html>
\ No newline at end of file
+</html>