diff --git a/Slim/App.php b/Slim/App.php
index 7db72b758..8953b1f98 100644
--- a/Slim/App.php
+++ b/Slim/App.php
@@ -273,8 +273,8 @@ public function redirect($from, $to, $status = 302)
      * declarations in the callback will be prepended by the group(s)
      * that it is in.
      *
-     * @param string   $pattern
-     * @param callable $callable
+     * @param string           $pattern
+     * @param callable|Closure $callable
      *
      * @return RouteGroupInterface
      */