diff --git a/src/ChannelManagers/LocalChannelManager.php b/src/ChannelManagers/LocalChannelManager.php
index ad01f7a..919a239 100644
--- a/src/ChannelManagers/LocalChannelManager.php
+++ b/src/ChannelManagers/LocalChannelManager.php
@@ -160,7 +160,7 @@ class LocalChannelManager implements ChannelManager
     public function unsubscribeFromAllChannels(ConnectionInterface $connection): PromiseInterface
     {
         if (! isset($connection->app)) {
-            return new FuilfilledPromise(false);
+            return Helpers::createFulfilledPromise(false);
         }
 
         $this->getLocalChannels($connection->app->id)