diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 8b7ea081..18b47ace 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -196,6 +196,7 @@ public function getConfigTreeBuilder()
                     ->useAttributeAsKey('name')
                     ->prototype('array')
                         ->fixXmlConfig('member')
+                        ->fixXmlConfig('excluded_404')
                         ->canBeUnset()
                         ->children()
                             ->scalarNode('type')