diff --git a/DependencyInjection/KaliopEzOptionFieldTypeExtension.php b/DependencyInjection/KaliopEzOptionFieldTypeExtension.php
index 385eeb3..51f6fd5 100644
--- a/DependencyInjection/KaliopEzOptionFieldTypeExtension.php
+++ b/DependencyInjection/KaliopEzOptionFieldTypeExtension.php
@@ -19,7 +19,7 @@ class KaliopEzOptionFieldTypeExtension extends Extension implements PrependExten
     // @see https://doc.ez.no/display/EZP/Template+implementation
     public function prepend(ContainerBuilder $container)
     {
-        $config = Yaml::parse(__DIR__ . '/../Resources/config/ez_field_templates.yml');
+        $config = Yaml::parse(file_get_contents(__DIR__ . '/../Resources/config/ez_field_templates.yml'));
         $container->prependExtensionConfig('ezpublish', $config);
     }