diff --git a/src/zhurnal/app.py b/src/zhurnal/app.py
index dbe5942..9c6679e 100644
--- a/src/zhurnal/app.py
+++ b/src/zhurnal/app.py
@@ -139,7 +139,7 @@ index_html = """
     }
 
     document.addEventListener("DOMContentLoaded", () => {
-            let url = (window.location.protocol == 'http' ? 'ws://': 'ws:///') + window.location.host + "/ws"
+            let url = (window.location.protocol == 'http' ? 'ws://': 'wss://') + window.location.host + "/ws"
             const ws = new WebSocket(url); 
             const messagesDiv = document.getElementById("messages");
             ws.onmessage = (event) => {