diff --git a/classes/Product.php b/classes/Product.php
index e96af64b7..5a8600fed 100644
--- a/classes/Product.php
+++ b/classes/Product.php
@@ -2468,8 +2468,9 @@ class ProductCore extends ObjectModel
 
 		if (!Validate::isBool($usetax) || !Validate::isUnsignedId($id_product))
 			die(Tools::displayError());
+
 		// Initializations
-		$id_group = (isset($context->customer) && $context->customer->id_default_group) ? $context->customer->id_default_group : (int)Group::getCurrent()->id;
+		$id_group = (int)Group::getCurrent()->id;
 
 		// If there is cart in context or if the specified id_cart is different from the context cart id
 		if (!is_object($cur_cart) || (Validate::isUnsignedInt($id_cart) && $id_cart && $cur_cart->id != $id_cart))