diff --git a/htdocs/compta/facture/prelevement.php b/htdocs/compta/facture/prelevement.php
index a7262b7c398..f5ac0f19509 100644
--- a/htdocs/compta/facture/prelevement.php
+++ b/htdocs/compta/facture/prelevement.php
@@ -325,7 +325,7 @@ if ($object->id > 0) {
 			$facavoir->fetch($facid);
 			$invoicecredits[] = $facavoir->getNomUrl(1);
 		}
-		print ' ('.$langs->transnoentities("InvoiceHasAvoir") . implode(',', $invoicecredits) . ')';
+		print ' ('.$langs->transnoentities("InvoiceHasAvoir") . (count($invoicecredits) ? ' ' : '') . implode(',', $invoicecredits) . ')';
 	}
 	/*
 	if ($facidnext > 0)