diff --git a/src/Symfony/Component/Form/FormTypeExtensionInterface.php b/src/Symfony/Component/Form/FormTypeExtensionInterface.php
index c80d8a8371608..fd842f8cfc7c3 100644
--- a/src/Symfony/Component/Form/FormTypeExtensionInterface.php
+++ b/src/Symfony/Component/Form/FormTypeExtensionInterface.php
@@ -16,7 +16,7 @@
 /**
  * @author Bernhard Schussek <bschussek@gmail.com>
  *
- * @method getExtendedTypes(): iterable
+ * @method static iterable getExtendedTypes() Gets the extended types - not implementing it is deprecated since Symfony 4.2
  */
 interface FormTypeExtensionInterface
 {