diff --git a/classes/Carrier.php b/classes/Carrier.php
index df7208dba..7b32bdab2 100644
--- a/classes/Carrier.php
+++ b/classes/Carrier.php
@@ -567,8 +567,8 @@ class CarrierCore extends ObjectModel
 			}
 
 			$row['name'] = (strval($row['name']) != '0' ? $row['name'] : Configuration::get('PS_SHOP_NAME'));
-			$row['price'] = ($shipping_method == Carrier::SHIPPING_METHOD_FREE ? 0 : $cart->getPackageShippingCost((int)$row['id_carrier'], true, null, null, $id_zone));
-			$row['price_tax_exc'] = ($shipping_method == Carrier::SHIPPING_METHOD_FREE ? 0 : $cart->getPackageShippingCost((int)$row['id_carrier'], false, null, null, $id_zone));
+			$row['price'] = (($shipping_method == Carrier::SHIPPING_METHOD_FREE) ? 0 : $cart->getPackageShippingCost((int)$row['id_carrier'], true, null, null, $id_zone));
+			$row['price_tax_exc'] = (($shipping_method == Carrier::SHIPPING_METHOD_FREE) ? 0 : $cart->getPackageShippingCost((int)$row['id_carrier'], false, null, null, $id_zone));
 			$row['img'] = file_exists(_PS_SHIP_IMG_DIR_.(int)$row['id_carrier']).'.jpg' ? _THEME_SHIP_DIR_.(int)$row['id_carrier'].'.jpg' : '';
 
 			// If price is false, then the carrier is unavailable (carrier module)