diff --git a/classes/Group.php b/classes/Group.php
index 04b0c11df..eb23de35b 100644
--- a/classes/Group.php
+++ b/classes/Group.php
@@ -78,7 +78,7 @@ class GroupCore extends ObjectModel
 			$shop_criteria = Shop::addSqlAssociation('group', 'g');
 
 		return Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
-		SELECT g.`id_group`, g.`reduction`, g.`price_display_method`, gl.`name`
+		SELECT DISTINCT g.`id_group`, g.`reduction`, g.`price_display_method`, gl.`name`
 		FROM `'._DB_PREFIX_.'group` g
 		LEFT JOIN `'._DB_PREFIX_.'group_lang` AS gl ON (g.`id_group` = gl.`id_group` AND gl.`id_lang` = '.(int)$id_lang.')
 		'.$shop_criteria.'