diff --git a/htdocs/compta/facture/card.php b/htdocs/compta/facture/card.php
index e3e0f60ce31..6c9707e4ff9 100644
--- a/htdocs/compta/facture/card.php
+++ b/htdocs/compta/facture/card.php
@@ -1443,11 +1443,26 @@ if (empty($reshook))
 					$object->origin = $origin;
 					$object->origin_id = $originid;
 
-					foreach ($object->lines as &$line)
+					foreach ($object->lines as $i => &$line)
 					{
 						$line->origin = $object->origin;
 						$line->origin_id = $line->id;
 						$line->fetch_optionals($line->id);
+						
+						// Si fk_remise_except defini on vérifie si la réduction à déjà été appliquée
+						if ($line->fk_remise_except)
+						{
+						    $discount=new DiscountAbsolute($line->db);
+						    $result=$discount->fetch($line->fk_remise_except);
+						    if ($result > 0)
+						    {
+						        // Check if discount not already affected to another invoice
+						        if ($discount->fk_facture_line > 0)
+						        {
+						            $line->fk_remise_except = 0;
+						        }
+						    }
+						}
 					}
 				}