diff --git a/htdocs/fourn/facture/card.php b/htdocs/fourn/facture/card.php
index 7c33a42b908..57a3e656c36 100644
--- a/htdocs/fourn/facture/card.php
+++ b/htdocs/fourn/facture/card.php
@@ -425,7 +425,7 @@ if (empty($reshook))
 
 			//var_dump($object->getRemainToPay(0));
 			//var_dump($discount->amount_ttc);exit;
-			if ($discount->amount_ttc > $object->getRemainToPay(0))
+			if (price2num($discount->amount_ttc) > price2num($object->getRemainToPay(0)))
 			{
 				// TODO Split the discount in 2 automatically
 				$error++;