diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 8aeb50465..77d9e058d 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -279,11 +279,13 @@ private function addFormatListenerSection(ArrayNodeDefinition $rootNode)
                         ->arrayNode('media_type')
                             ->canBeEnabled()
                             ->beforeNormalization()
-                            ->ifString()->then(function($v) { return array('enabled' => true, 'version_regex' => $v); })
-                        ->end()
-                        ->children()
-                            ->scalarNode('service')->defaultNull()->end()
-                            ->scalarNode('version_regex')->defaultValue('/(v|version)=(?P<version>[0-9\.]+)/')->end()
+                                ->ifString()
+                                ->then(function ($v) { return array('enabled' => true, 'version_regex' => $v); })
+                            ->end()
+                            ->children()
+                                ->scalarNode('service')->defaultNull()->end()
+                                ->scalarNode('version_regex')->defaultValue('/(v|version)=(?P<version>[0-9\.]+)/')->end()
+                            ->end()
                         ->end()
                     ->end()
                 ->end()
diff --git a/Resources/doc/configuration-reference.rst b/Resources/doc/configuration-reference.rst
index ba2a44114..dde59508c 100644
--- a/Resources/doc/configuration-reference.rst
+++ b/Resources/doc/configuration-reference.rst
@@ -117,9 +117,6 @@ Full default configuration
                 exception_fallback_format:  null
                 priorities:           []
             media_type:
-                version_regex:
-                    enabled:              false
-                    service:              null
-                    regex:                '/(v|version)=(?P<version>[0-9\.]+)/'
-
-
+                enabled:              false
+                service:              null
+                version_regex:        '/(v|version)=(?P<version>[0-9\.]+)/'