diff --git a/htdocs/contrat/class/contrat.class.php b/htdocs/contrat/class/contrat.class.php
index c2e2c4c065b..cb9466e26f6 100644
--- a/htdocs/contrat/class/contrat.class.php
+++ b/htdocs/contrat/class/contrat.class.php
@@ -1517,7 +1517,7 @@ class Contrat extends CommonObject
 			$resql=$this->db->query($sql);
 			if ($resql)
 			{
-				$contractlineid = $this->db->last_insert_id(MAIN_DB_PREFIX.$contractline->table_element);
+				$contractlineid = $this->db->last_insert_id(MAIN_DB_PREFIX."contratdet");
 
 				$result=$this->update_statut($user);
 				if ($result > 0)