diff --git a/src/rtmt/rtmt_websocket.ts b/src/rtmt/rtmt_websocket.ts
index f0da39b..c984d40 100644
--- a/src/rtmt/rtmt_websocket.ts
+++ b/src/rtmt/rtmt_websocket.ts
@@ -56,7 +56,6 @@ export class RTMTWS implements RTMT {
     // sends out pings plus a conservative assumption of the latency.
     this.pingTimeout = setTimeout(() => {
       this.ws.close();
-      this.ws.onclose?.(new CloseEvent("CONNECTION_LOST"));
     }, PING_INTERVAL + PING_INTERVAL_BUFFER_TIME);
   }