diff --git a/DependencyInjection/ChillReportExtension.php b/DependencyInjection/ChillReportExtension.php
index 7e3506b5b..972772a23 100644
--- a/DependencyInjection/ChillReportExtension.php
+++ b/DependencyInjection/ChillReportExtension.php
@@ -6,13 +6,14 @@ use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\Config\FileLocator;
 use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 use Symfony\Component\DependencyInjection\Loader;
+use Symfony\Component\DependencyInjection\Extension\PrependExtensionInterface;
 
 /**
  * This is the class that loads and manages your bundle configuration
  *
  * To learn more see {@link http://symfony.com/doc/current/cookbook/bundles/extension.html}
  */
-class ChillReportExtension extends Extension
+class ChillReportExtension extends Extension implements PrependExtensionInterface
 {
     /**
      * {@inheritdoc}
@@ -25,4 +26,24 @@ class ChillReportExtension extends Extension
         $loader = new Loader\YamlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
         $loader->load('services.yml');
     }
+
+    /**
+     * Declare the entity Report, as a customizable entity (can add custom fields)
+     */
+    public function declareReportAsCustomizable(ContainerBuilder $container)
+    {
+        $bundles = $container->getParameter('kernel.bundles');
+        if (!isset($bundles['ChillCustomFieldsBundle'])) {
+            throw new MissingBundleException('ChillCustomFieldsBundle');
+        }
+
+        $customizables_entities['customizables_entities'][] =  array('class' => 'Chill\ReportBundle\Entity\Report', 'name' => 'ReportName');
+
+        $container->prependExtensionConfig('chill_custom_fields', $customizables_entities);
+    }
+
+    public function prepend(ContainerBuilder $container)
+    {
+        $this->declareReportAsCustomizable($container);
+    }
 }