diff --git a/controllers/front/CartController.php b/controllers/front/CartController.php
index e6c71f4a2..d9572f5ed 100644
--- a/controllers/front/CartController.php
+++ b/controllers/front/CartController.php
@@ -197,7 +197,7 @@ class CartControllerCore extends FrontController
 		if (is_array($cart_products))
 			foreach ($cart_products as $cart_product)
 			{
-				if ((isset($this->id_product_attribute) && $cart_product['id_product_attribute'] == $this->id_product_attribute && $this->id_product_attribute) ||
+				if ((!isset($this->id_product_attribute) || $cart_product['id_product_attribute'] == $this->id_product_attribute) &&
 					(isset($this->id_product) && $cart_product['id_product'] == $this->id_product))
 				{
 					$qty_to_check = $cart_product['cart_quantity'];