diff --git a/htdocs/fourn/facture/card.php b/htdocs/fourn/facture/card.php
index ab13801319f..86955a7a411 100644
--- a/htdocs/fourn/facture/card.php
+++ b/htdocs/fourn/facture/card.php
@@ -1191,7 +1191,7 @@ if (empty($reshook))
 			$tva_tx = '';
 		}
 
-		$qty = price2num(GETPOST('qty'.$predef), 'alpha');
+		$qty = price2num(GETPOST('qty'.$predef, 'alpha'));
 		$remise_percent = GETPOST('remise_percent'.$predef);
 		$price_ht_devise = price2num(GETPOST('multicurrency_price_ht'), 'CR');