diff --git a/htdocs/projet/class/project.class.php b/htdocs/projet/class/project.class.php
index 1186de5e4ad0d556665ce93f62672c0c5265767b..77591686983adf8fa8be8e3761413d3f9722fe51 100644
--- a/htdocs/projet/class/project.class.php
+++ b/htdocs/projet/class/project.class.php
@@ -83,6 +83,8 @@ class Project extends CommonObject
         $error = 0;
         $ret = 0;
 
+        $now=dol_now();
+
         // Check parameters
         if (!trim($this->ref))
         {
@@ -113,9 +115,9 @@ class Project extends CommonObject
         $sql.= ", " . $user->id;
         $sql.= ", 0";
         $sql.= ", " . ($this->public ? 1 : 0);
-        $sql.= ", " . $this->db->idate(dol_now());
-        $sql.= ", " . ($this->date_start != '' ? $this->db->idate($this->date_start) : 'null');
-        $sql.= ", " . ($this->date_end != '' ? $this->db->idate($this->date_end) : 'null');
+        $sql.= ", '".$this->db->idate($now)."'";
+        $sql.= ", " . ($this->date_start != '' ? "'".$this->db->idate($this->date_start)."'" : 'null');
+        $sql.= ", " . ($this->date_end != '' ? "'".$this->db->idate($this->date_end)."'" : 'null');
         $sql.= ", ".$conf->entity;
         $sql.= ")";