diff --git a/DependencyInjection/PropelExtension.php b/DependencyInjection/PropelExtension.php
index 011cd58..0655c5c 100644
--- a/DependencyInjection/PropelExtension.php
+++ b/DependencyInjection/PropelExtension.php
@@ -16,7 +16,7 @@ class PropelExtension extends Extension
      * @param array            $config    An array of configuration settings
      * @param ContainerBuilder $container A ContainerBuilder instance
      */
-    public function configLoad($config, ContainerBuilder $container)
+    public function configLoad(array $config, ContainerBuilder $container)
     {
         if (!$container->hasDefinition('propel')) {
             $loader = new XmlFileLoader($container, __DIR__.'/../Resources/config');
@@ -46,7 +46,7 @@ class PropelExtension extends Extension
      * @param array            $config    An array of configuration settings
      * @param ContainerBuilder $container A ContainerBuilder instance
      */
-    public function dbalLoad($config, ContainerBuilder $container)
+    public function dbalLoad(array $config, ContainerBuilder $container)
     {
         if (!$container->hasDefinition('propel')) {
             $loader = new XmlFileLoader($container, __DIR__.'/../Resources/config');