diff --git a/htdocs/facture.class.php b/htdocs/facture.class.php
index 2d1b6444ab1..49654c431c7 100644
--- a/htdocs/facture.class.php
+++ b/htdocs/facture.class.php
@@ -1862,7 +1862,7 @@ class Facture extends CommonObject
             $obj = new $classname();
 
             $numref = "";
-            $numref = $obj->getNumRef($soc,$this);
+            $numref = $obj->getNumRef($soc,$this->date);
 
             if ( $numref != "")
             {
diff --git a/htdocs/includes/modules/facture/orion/orion.modules.php b/htdocs/includes/modules/facture/orion/orion.modules.php
index ff4b8b38334..a0364b85074 100644
--- a/htdocs/includes/modules/facture/orion/orion.modules.php
+++ b/htdocs/includes/modules/facture/orion/orion.modules.php
@@ -75,14 +75,16 @@ function info()
   /**     \brief      Renvoi prochaine valeur attribuée
    *      \return     string      Valeur
    */
-    function getNextValue()
+    function getNextValue($date_creation)
     {
         global $db,$conf;
-        
-        // D'abord on défini l'année fiscale
+
+        // On défini l'année fiscale
         $prefix='FA';
         $current_month = date("n");
-        if($conf->global->SOCIETE_FISCAL_MONTH_START && $current_month >= $conf->global->SOCIETE_FISCAL_MONTH_START)
+        $create_month = strftime("%m",$date_creation);
+        
+        if($conf->global->SOCIETE_FISCAL_MONTH_START && $current_month >= $conf->global->SOCIETE_FISCAL_MONTH_START && $create_month >= $conf->global->SOCIETE_FISCAL_MONTH_START)
         {
         	$yy = strftime("%y",mktime(0,0,0,date("m"),date("d"),date("Y")+1));
         }
@@ -131,9 +133,9 @@ function info()
      *      \param      objsoc      Objet société
      *      \return     string      Texte descripif
      */
-    function getNumRef($objsoc=0)
+    function getNumRef($objsoc=0,$date_creation)
     {
-        return $this->getNextValue();
+        return $this->getNextValue($date_creation);
     }
     
 }