No need to recalculate $totalpaye.

htdocs/fourn/facture/card.php

@@ -2411,7 +2411,6 @@ else
 				print $langs->trans('AlreadyPaid');
 			print ' :</td><td align="right"'.(($totalpaye > 0)?' class="amountalreadypaid"':'').'>' . price($totalpaye) . '</td><td>&nbsp;</td></tr>';
 
-            $totalpaye = $object->getSommePaiement();
             $resteapayer = $object->total_ttc - $totalpaye;
 			$resteapayeraffiche = $resteapayer;
 			$cssforamountpaymentcomplete = 'amountpaymentcomplete';