diff --git a/htdocs/compta/facture/class/facture.class.php b/htdocs/compta/facture/class/facture.class.php
index d0242e9a77c..370b63a2c54 100644
--- a/htdocs/compta/facture/class/facture.class.php
+++ b/htdocs/compta/facture/class/facture.class.php
@@ -236,7 +236,7 @@ class Facture extends CommonObject
         $sql.= ", ".$conf->entity;
         $sql.= ", '".$this->type."'";
         $sql.= ", '".$socid."'";
-        $sql.= ", ".$this->db->idate($now);
+        $sql.= ", '".$this->db->idate($now)."'";
         $sql.= ", '".$totalht."'";
         $sql.= ",".($this->remise_absolue>0?$this->remise_absolue:'NULL');
         $sql.= ",".($this->remise_percent>0?$this->remise_percent:'NULL');