diff --git a/classes/Product.php b/classes/Product.php
index ff4e1f8a1..763e103ac 100644
--- a/classes/Product.php
+++ b/classes/Product.php
@@ -2439,6 +2439,9 @@ class ProductCore extends ObjectModel
 			&& Configuration::get('VATNUMBER_MANAGEMENT'))
 			$usetax = false;
 
+		if($usetax != false && Group::getPriceDisplayMethod($id_group))
+			$usetax = false;
+
 		if (is_null($id_customer) && Validate::isLoadedObject($context->customer))
 			$id_customer = $context->customer->id;