diff --git a/src/Bundle/ChillCustomFieldsBundle/Form/Extension/PostTextIntegerExtension.php b/src/Bundle/ChillCustomFieldsBundle/Form/Extension/PostTextIntegerExtension.php
index 77c7a1bf0..da17c573d 100644
--- a/src/Bundle/ChillCustomFieldsBundle/Form/Extension/PostTextIntegerExtension.php
+++ b/src/Bundle/ChillCustomFieldsBundle/Form/Extension/PostTextIntegerExtension.php
@@ -18,7 +18,7 @@ use Symfony\Component\Form\Extension\Core\Type\IntegerType;
  */
 class PostTextIntegerExtension extends PostTextExtension
 {
-    public function getExtendedTypes(): iterable
+    public static function getExtendedTypes(): iterable
     {
         return [IntegerType::class];
     }