diff --git a/classes/Product.php b/classes/Product.php
index 60c69ac32..067372759 100644
--- a/classes/Product.php
+++ b/classes/Product.php
@@ -3944,7 +3944,10 @@ class ProductCore extends ObjectModel
 				$id_address_delivery = (int)$product_update['id_address_delivery'];
 				$product_quantity = (int)(isset($product_update['cart_quantity']) ? $product_update['cart_quantity'] : $product_update['product_quantity']);
 				$price = isset($product_update['price']) ? $product_update['price'] : $product_update['product_price'];
-				$price_wt = $price * (1 + ((isset($product_update['tax_rate']) ? $product_update['tax_rate'] : $product_update['rate']) * 0.01));
+				if (isset($product_update['price_wt']) && $product_update['price_wt'])
+					$price_wt = $product_update['price_wt'];
+				else
+					$price_wt = $price * (1 + ((isset($product_update['tax_rate']) ? $product_update['tax_rate'] : $product_update['rate']) * 0.01));
 
 				if (isset($customized_datas[$product_id][$product_attribute_id]))
 					foreach ($customized_datas[$product_id][$product_attribute_id][$id_address_delivery] as $customization)