diff --git a/src/Bundle/ChillWopiBundle/src/DependencyInjection/Configuration.php b/src/Bundle/ChillWopiBundle/src/DependencyInjection/Configuration.php
index 31453e584..8a35e8871 100644
--- a/src/Bundle/ChillWopiBundle/src/DependencyInjection/Configuration.php
+++ b/src/Bundle/ChillWopiBundle/src/DependencyInjection/Configuration.php
@@ -24,27 +24,27 @@ final class Configuration implements ConfigurationInterface
             ->arrayNode('openstack')
             ->info("parameters to connect to the openstack swift repository")
             ->children()
-                ->scalarNode('os_username')
+                ->scalarNode('username')
                     ->defaultValue('%env(resolve:OS_USERNAME)%')
                     ->isRequired()
                     ->cannotBeEmpty()
                 ->end()
-                ->scalarNode('os_password')
+                ->scalarNode('password')
                     ->defaultValue('%env(resolve:OS_PASSWORD)%')
                     ->isRequired()
                     ->cannotBeEmpty()
                 ->end()
-                ->scalarNode('os_tenant_id')
+                ->scalarNode('tenantId')
                     ->defaultValue('%env(resolve:OS_TENANT_ID)%')
                     ->isRequired()
                     ->cannotBeEmpty()
                  ->end()
-                ->scalarNode('os_region_name')
+                ->scalarNode('region')
                     ->defaultValue('%env(resolve:OS_REGION_NAME)%')
                     ->isRequired()
                     ->cannotBeEmpty()
                 ->end()
-                ->scalarNode('os_auth_url')
+                ->scalarNode('authUrl')
                     ->defaultValue('%env(resolve:OS_AUTH_URL)%')
                     ->isRequired()
                     ->cannotBeEmpty()