diff --git a/htdocs/fourn/facture/paiement.php b/htdocs/fourn/facture/paiement.php
index db5bc9acfb5..ccd7501e936 100644
--- a/htdocs/fourn/facture/paiement.php
+++ b/htdocs/fourn/facture/paiement.php
@@ -129,7 +129,8 @@ if (empty($reshook))
 	    $datepaye = dol_mktime(12, 0, 0, GETPOST('remonth'), GETPOST('reday'), GETPOST('reyear'));
 	    $paiement_id = 0;
 	    $totalpayment = 0;
-	    $atleastonepaymentnotnull = 0;
+		$atleastonepaymentnotnull = 0;
+		$multicurrency_totalpayment = 0;
 
 	    // Generate payment array and check if there is payment higher than invoice and payment date before invoice date
 	    $tmpinvoice = new FactureFournisseur($db);
@@ -171,7 +172,7 @@ if (empty($reshook))
 	        } elseif (substr($key, 0, 21) == 'multicurrency_amount_')
 			{
 				$cursorfacid = substr($key, 21);
-	            $multicurrency_amounts[$cursorfacid] = price2num(trim(GETPOST($key)));
+	            $multicurrency_amounts[$cursorfacid] = (GETPOST($key) ? price2num(GETPOST($key)) : 0);
 	            $multicurrency_totalpayment += $multicurrency_amounts[$cursorfacid];
 	            if (!empty($multicurrency_amounts[$cursorfacid])) $atleastonepaymentnotnull++;
 	            $result = $tmpinvoice->fetch($cursorfacid);