diff --git a/static/js/ws.js b/static/js/ws.js
index 89d91b3c..96629aed 100644
--- a/static/js/ws.js
+++ b/static/js/ws.js
@@ -10,7 +10,7 @@ conn = new WebSocket(`ws://${location.host}/ws`);
 conn.onopen = () => {
     log("WebSocket is opened. Send ping");
     log("Send ping pong frequently")
-    // pingpongTimer = setInterval(sendPing, 1000 / PINGPONGPS)
+    pingpongTimer = setInterval(sendPing, 1000 / PINGPONGPS)
 
     startWebRTC();
 }