diff --git a/htdocs/commande/commande.class.php b/htdocs/commande/commande.class.php
index 26162295f84..b148694955b 100644
--- a/htdocs/commande/commande.class.php
+++ b/htdocs/commande/commande.class.php
@@ -512,9 +512,15 @@ class Commande extends CommonObject
 		// Clean parameters
 		$this->brouillon = 1;		// On positionne en mode brouillon la commande
 
-		dol_syslog("Commande::create");
+		dol_syslog("Commande::create user=".$user->id);
 
 		// Check parameters
+		if (empty($this->ref))
+	 	{
+			$this->error=$langs->trans("ErrorFieldRequired",$langs->trans("Ref"));
+			dol_syslog("Commande::create ".$this->error, LOG_ERR);
+			return -1;
+		}	
 		if (! empty($conf->global->COMMANDE_REQUIRE_SOURCE) && $this->source < 0)
 		{
 			$this->error=$langs->trans("ErrorFieldRequired",$langs->trans("Source"));
diff --git a/htdocs/facture.class.php b/htdocs/facture.class.php
index 0a1bb27c10e..a6210996dea 100644
--- a/htdocs/facture.class.php
+++ b/htdocs/facture.class.php
@@ -147,6 +147,14 @@ class Facture extends CommonObject
 
 		dol_syslog("Facture::Create user=".$user->id);
 
+		// Check parameters
+		if (empty($this->ref))
+	 	{
+			$this->error=$langs->trans("ErrorFieldRequired",$langs->trans("Ref"));
+			dol_syslog("Facture::create ".$this->error, LOG_ERR);
+			return -1;
+		}	
+
 		$soc = new Societe($this->db);
 		$soc->fetch($this->socid);
 
diff --git a/htdocs/propal.class.php b/htdocs/propal.class.php
index 3026cdc42aa..22b25557a43 100644
--- a/htdocs/propal.class.php
+++ b/htdocs/propal.class.php
@@ -518,13 +518,22 @@ class Propal extends CommonObject
 	{
 		global $langs,$conf,$mysoc;
 
-		// on verifie si la ref n'est pas utilisee
-		$soc = new Societe($this->db);
-		$soc->fetch($this->socid);
-		$this->verifyNumRef($soc);
-
 		// Clean parameters
 		$this->fin_validite = $this->datep + ($this->duree_validite * 24 * 3600);
+		
+		dol_syslog("Propal::Create");
+		
+		// Check parameters
+		if (empty($this->ref))
+	 	{
+			$this->error=$langs->trans("ErrorFieldRequired",$langs->trans("Ref"));
+			dol_syslog("Facture::create ".$this->error, LOG_ERR);
+			return -1;
+		}	
+		$soc = new Societe($this->db);
+		$soc->fetch($this->socid);
+		$this->verifyNumRef($soc);	// Check ref is not yet used
+
 
 		$this->db->begin();
 
diff --git a/htdocs/user.class.php b/htdocs/user.class.php
index 8232abba0ce..eb55390c942 100644
--- a/htdocs/user.class.php
+++ b/htdocs/user.class.php
@@ -469,9 +469,9 @@ class User extends CommonObject
 
 
 	/**
-		\brief      Charge dans l'objet user, la liste des permissions auxquelles l'utilisateur a droit
-		\param      moduletag    nom du module dont il faut recuperer les droits ('' par defaut signifie tous les droits)
-		*/
+	 *	\brief      Charge dans l'objet user, la liste des permissions auxquelles l'utilisateur a droit
+	 *	\param      moduletag    nom du module dont il faut recuperer les droits ('' par defaut signifie tous les droits)
+	 */
 	function getrights($moduletag='')
 	{
 		global $conf;
diff --git a/mysql/migration/repair.sql b/mysql/migration/repair.sql
index e8ed4eba1f6..9817d693940 100644
--- a/mysql/migration/repair.sql
+++ b/mysql/migration/repair.sql
@@ -11,3 +11,6 @@
 delete from llx_facture where facnumber = '(PROV)';
 delete from llx_commande where ref = '(PROV)';
 delete from llx_propal where ref = '(PROV)';
+delete from llx_facture where facnumber = '';
+delete from llx_commande where ref = '';
+delete from llx_propal where ref = '';