diff --git a/htdocs/contrat/class/contrat.class.php b/htdocs/contrat/class/contrat.class.php
index 4f3782870ac..1ffae1d5998 100644
--- a/htdocs/contrat/class/contrat.class.php
+++ b/htdocs/contrat/class/contrat.class.php
@@ -351,6 +351,8 @@ class Contrat extends CommonObject
 
 		$now=dol_now();
 
+		$this->lines=array();
+
 		// Selectionne les lignes contrats liees a un produit
 		$sql = "SELECT p.label, p.description as product_desc, p.ref,";
 		$sql.= " d.rowid, d.fk_contrat, d.statut, d.description, d.price_ht, d.tva_tx, d.localtax1_tx, d.localtax2_tx, d.qty, d.remise_percent, d.subprice,";
@@ -422,9 +424,9 @@ class Contrat extends CommonObject
 				$line->date_debut_reel   = $this->db->jdate($objp->date_ouverture);
 				$line->date_fin_prevue   = $this->db->jdate($objp->date_fin_validite);
 				$line->date_fin_reel     = $this->db->jdate($objp->date_cloture);
-				
+
 				$this->lines[]			= $line;
-				
+
 				//dol_syslog("1 ".$line->desc);
 				//dol_syslog("2 ".$line->product_desc);