diff --git a/classes/Tag.php b/classes/Tag.php
index 06c15f919..6b9f95ad7 100644
--- a/classes/Tag.php
+++ b/classes/Tag.php
@@ -58,6 +58,9 @@ class TagCore extends ObjectModel
 			parent::__construct($id);
 		else if ($name && Validate::isGenericName($name) && $id_lang && Validate::isUnsignedId($id_lang))
 		{
+			$this->def = self::getDefinition($this);
+			$this->setDefinitionRetrocompatibility();
+
 			$row = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow('
 			SELECT *
 			FROM `'._DB_PREFIX_.'tag` t