diff --git a/controllers/front/CartController.php b/controllers/front/CartController.php
index 2a76517d3..618ed7418 100644
--- a/controllers/front/CartController.php
+++ b/controllers/front/CartController.php
@@ -257,7 +257,7 @@ class CartControllerCore extends FrontController
 	public function displayAjax()
 	{
 		if ($this->errors)
-			die(Tools::jsonEncode(array('hasError' => true, $this->errors)));
+			die(Tools::jsonEncode(array('hasError' => true, 'errors' => $this->errors)));
 
 		if (Tools::getIsset('summary'))
 		{