diff --git a/src/Illuminate/Broadcasting/BroadcastController.php b/src/Illuminate/Broadcasting/BroadcastController.php
index 69274b7c1561..f2936ab416e0 100644
--- a/src/Illuminate/Broadcasting/BroadcastController.php
+++ b/src/Illuminate/Broadcasting/BroadcastController.php
@@ -30,7 +30,9 @@ public function authenticate(Request $request)
      * See: https://pusher.com/docs/channels/server_api/authenticating-users/#user-authentication.
      *
      * @param  \Illuminate\Http\Request  $request
-     * @return \Illuminate\Http\Response
+     * @return array|null
+     *
+     * @throws \Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException
      */
     public function authenticateUser(Request $request)
     {