diff --git a/src/Illuminate/Routing/Router.php b/src/Illuminate/Routing/Router.php
index d3394db8aaf..694d82b5a91 100755
--- a/src/Illuminate/Routing/Router.php
+++ b/src/Illuminate/Routing/Router.php
@@ -619,7 +619,7 @@ protected function actionReferencesController($action)
             return false;
         }
 
-        return is_string($action) || is_string(isset($action['uses']) ? $action['uses'] : null);
+        return is_string($action) || isset($action['uses']) && is_string($action['uses']);
     }
 
     /**