diff --git a/lib/Thelia/Form/Definition/FrontForm.php b/lib/Thelia/Form/Definition/FrontForm.php
index <HASH>..<HASH> 100644
--- a/lib/Thelia/Form/Definition/FrontForm.php
+++ b/lib/Thelia/Form/Definition/FrontForm.php
@@ -29,4 +29,5 @@ final class FrontForm
     const ADDRESS_UPDATE = 'thelia.front.address.update';
     const CONTACT = 'thelia.front.contact';
     const NEWSLETTER = 'thelia.front.newsletter';
+    const CART_ADD = 'thelia.cart.add';
 }
use the correct method to get the correct CartAdd form

This allow to use the action TheliaEvents::FORM_AFTER_BUILD.".thelia_cart_add" during to build the form AND to submit the form :)