diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 7e0af16..f23f3a8 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -35,12 +35,10 @@ class Configuration implements ConfigurationInterface
                 ->scalarNode('default_index')->end()
                 ->scalarNode('default_manager')->defaultValue('orm')->end()
                 ->arrayNode('serializer')
-                    ->prototype('array')
-                        ->treatNullLike(array())
-                        ->children()
-                            ->scalarNode('callable_class')->end()
-                            ->scalarNode('id')->end()
-                        ->end()
+                    ->treatNullLike(array())
+                    ->children()
+                        ->scalarNode('callback')->defaultValue('foq_elastica.serializer.callback')->end()
+                        ->scalarNode('serializer')->defaultValue('serializer')->end()
                     ->end()
                 ->end()
             ->end()
diff --git a/DependencyInjection/FOSElasticaExtension.php b/DependencyInjection/FOSElasticaExtension.php
index 1469510..1c2cbe0 100644
--- a/DependencyInjection/FOSElasticaExtension.php
+++ b/DependencyInjection/FOSElasticaExtension.php
@@ -40,7 +40,8 @@ class FOSElasticaExtension extends Extension
         }
 
         $clientIdsByName = $this->loadClients($config['clients'], $container);
-        $indexIdsByName  = $this->loadIndexes($config['indexes'], $container, $clientIdsByName, $config['default_client'], $config['serializer']);
+        $serializerConfig = isset($config['serializer']) ? $config['serializer'] : null;
+        $indexIdsByName  = $this->loadIndexes($config['indexes'], $container, $clientIdsByName, $config['default_client'], $serializerConfig);
         $indexRefsByName = array_map(function($id) {
             return new Reference($id);
         }, $indexIdsByName);
@@ -179,14 +180,12 @@ class FOSElasticaExtension extends Extension
             $typeDef->setFactoryService($indexId);
             $typeDef->setFactoryMethod('getType');
             if ($serializerConfig) {
-
-                $serializerDefArgs = array(new Reference($serializerConfig['id']));
+                $serializerDef = clone $container->getDefinition($serializerConfig['callback']);
+                $serializerDef->addMethodCall('setSerializer', array(new Reference($serializerConfig['serializer'])));
                 if (isset($type['serializer']['groups'])) {
-                    $serializerDefArgs[] = $type['serializer']['groups'];
+                    $serializerDef->addMethodCall('setGroups', array($type['serializer']['groups']));
                 }
-
-                $serializerDef = new Definition("%{$serializerConfig['callable_class']}%", $serializerDefArgs);
-                $serializerId = sprintf('%s.%s.serializer', $indexId, $name);
+                $serializerId = sprintf('%s.%s.serializer.callback', $indexId, $name);
                 $container->setDefinition($serializerId, $serializerDef);
 
                 $typeDef->addMethodCall('setSerializer', array(array(new Reference($serializerId), 'serialize')));
diff --git a/Resources/config/config.xml b/Resources/config/config.xml
index bf9d40d..f073aeb 100644
--- a/Resources/config/config.xml
+++ b/Resources/config/config.xml
@@ -14,6 +14,7 @@
         <parameter key="fos_elastica.elastica_to_model_transformer.collection.class">FOS\ElasticaBundle\Transformer\ElasticaToModelTransformerCollection</parameter>
         <parameter key="fos_elastica.provider_registry.class">FOS\ElasticaBundle\Provider\ProviderRegistry</parameter>
         <parameter key="fos_elastica.property_accessor.class">Symfony\Component\PropertyAccess\PropertyAccessor</parameter>
+        <parameter key="foq_elastica.serializer.callback.class">FOQ\ElasticaBundle\Serializer\Callback</parameter>
     </parameters>
 
     <services>
@@ -77,8 +78,9 @@
             <tag name="knp_paginator.subscriber" />
         </service>
 
-        <service id="fos_elastica.property_accessor" class="%fos_elastica.property_accessor.class%">
-        </service>
+        <service id="fos_elastica.property_accessor" class="%fos_elastica.property_accessor.class%" />
+
+        <service id="foq_elastica.serializer.callback" class="%foq_elastica.serializer.callback.class%" />
     </services>
 
 </container>
diff --git a/Serializer/Callback.php b/Serializer/Callback.php
new file mode 100644
index 0000000..576004a
--- /dev/null
+++ b/Serializer/Callback.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace FOQ\ElasticaBundle\Serializer;
+
+class Callback
+{
+    protected $serializer;
+
+    protected $groups;
+
+    public function setSerializer($serializer){
+        $this->serializer = $serializer;
+    }
+
+    public function setGroups($groups){
+        $this->groups = $groups;
+    }
+
+    public function serialize($object)
+    {
+        $this->serializer->setGroups(null);
+        $this->serializer->setGroups($this->groups);
+        return $this->serializer->serialize($object, 'json');
+    }
+}