diff --git a/src/Bundle/ChillBudgetBundle/DependencyInjection/Configuration.php b/src/Bundle/ChillBudgetBundle/DependencyInjection/Configuration.php
index fd7034f2d..a18e17ae6 100644
--- a/src/Bundle/ChillBudgetBundle/DependencyInjection/Configuration.php
+++ b/src/Bundle/ChillBudgetBundle/DependencyInjection/Configuration.php
@@ -30,7 +30,7 @@ class Configuration implements ConfigurationInterface
             ->children()
 
                 // ressources
-            ->arrayNode('resources')->isRequired()->requiresAtLeastOneElement()
+            ->arrayNode('resources')->defaultValue([])
             ->arrayPrototype()
             ->children()
             ->scalarNode('key')->isRequired()->cannotBeEmpty()
@@ -52,7 +52,7 @@ class Configuration implements ConfigurationInterface
             ->end()
             ->end()
             ->end()
-            ->arrayNode('charges')->isRequired()->requiresAtLeastOneElement()
+            ->arrayNode('charges')->defaultValue([])
             ->arrayPrototype()
             ->children()
             ->scalarNode('key')->isRequired()->cannotBeEmpty()