diff --git a/htdocs/contrat/class/contrat.class.php b/htdocs/contrat/class/contrat.class.php
index d384eea9b91..09900e14d49 100644
--- a/htdocs/contrat/class/contrat.class.php
+++ b/htdocs/contrat/class/contrat.class.php
@@ -448,14 +448,14 @@ class Contrat extends CommonObject
 				$this->extraparams				= (array) json_decode($result["extraparams"], true);
 
 				$this->db->free($resql);
-				
+
 				// Retreive all extrafield for thirdparty
 				// fetch optionals attributes and labels
 				require_once(DOL_DOCUMENT_ROOT.'/core/class/extrafields.class.php');
 				$extrafields=new ExtraFields($this->db);
 				$extralabels=$extrafields->fetch_name_optionals_label($this->table_element,true);
 				$this->fetch_optionals($this->id,$extralabels);
-				
+
 
 				return $this->id;
 			}
@@ -728,7 +728,7 @@ class Contrat extends CommonObject
 		$sql.= " fk_commercial_signature, fk_commercial_suivi, fk_projet,";
 		$sql.= " ref, entity, note_private, note_public)";
 		$sql.= " VALUES ('".$this->db->idate($now)."',".$this->socid.",".$user->id;
-		$sql.= ",".$this->db->idate($this->date_contrat);
+		$sql.= ", '".$this->db->idate($this->date_contrat)."'";
 		$sql.= ",".($this->commercial_signature_id>0?$this->commercial_signature_id:"NULL");
 		$sql.= ",".($this->commercial_suivi_id>0?$this->commercial_suivi_id:"NULL");
 		$sql.= ",".($this->fk_project>0?$this->fk_project:"NULL");
@@ -761,8 +761,8 @@ class Contrat extends CommonObject
 			// Insert contacts commerciaux ('SALESREPFOLL','contrat')
 			$result=$this->add_contact($this->commercial_suivi_id,'SALESREPFOLL','internal');
 			if ($result < 0) $error++;
-			
-			
+
+
 			if (! $error)
 			{
 				if (empty($conf->global->MAIN_EXTRAFIELDS_DISABLED)) // For avoid conflicts if trigger used