diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 301f5a9..42f49b7 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -204,6 +204,21 @@ class Configuration
                     ->scalarNode('index')->end()
                     ->scalarNode('analyzer')->end()
                     ->scalarNode('term_vector')->end()
+                    ->arrayNode('fields')
+                        ->useAttributeAsKey('name')
+                        ->prototype('array')
+                            ->treatNullLike(array())
+                            ->addDefaultsIfNotSet()
+                            ->children()
+                                ->scalarNode('type')->defaultValue('string')->end()
+                                ->scalarNode('boost')->end()
+                                ->scalarNode('store')->end()
+                                ->scalarNode('index')->end()
+                                ->scalarNode('analyzer')->end()
+                                ->scalarNode('term_vector')->end()
+                            ->end()
+                        ->end()
+                    ->end()
                 ->end()
             ->end()
         ;