diff --git a/src/client/websocket/WebSocketShard.js b/src/client/websocket/WebSocketShard.js
index 01cfc9e..63e4989 100644
--- a/src/client/websocket/WebSocketShard.js
+++ b/src/client/websocket/WebSocketShard.js
@@ -869,7 +869,8 @@ class WebSocketShard extends EventEmitter {
    * @private
    */
   _cleanupConnection() {
-    this.connection.onopen = this.connection.onclose = this.connection.onerror = this.connection.onmessage = null;
+    this.connection.onopen = this.connection.onclose = this.connection.onmessage = null;
+    this.connection.onerror = () => null;
   }
 
   /**