diff --git a/src/Illuminate/Broadcasting/BroadcastManager.php b/src/Illuminate/Broadcasting/BroadcastManager.php
index 59ba97c54be8..e5ec7346e813 100644
--- a/src/Illuminate/Broadcasting/BroadcastManager.php
+++ b/src/Illuminate/Broadcasting/BroadcastManager.php
@@ -230,7 +230,7 @@ protected function createPusherDriver(array $config)
      */
     protected function createAblyDriver(array $config)
     {
-        return new AblyBroadcaster(new AblyRest($config['key']));
+        return new AblyBroadcaster(new AblyRest($config));
     }
 
     /**