diff --git a/htdocs/core/class/discount.class.php b/htdocs/core/class/discount.class.php
index 5ed79b7c2d5..0f508507491 100644
--- a/htdocs/core/class/discount.class.php
+++ b/htdocs/core/class/discount.class.php
@@ -636,7 +636,7 @@ class DiscountAbsolute
 	 *	@param		int			      $multicurrency	Return multicurrency_amount instead of amount
      *	@return		int					        		<0 if KO, Sum of credit notes and deposits amount otherwise
      */
-    public function getSumFromThisCreditNotesNotUsed($invoice, $multicurrency=0)
+    public function getSumFromThisCreditNotesNotUsed($invoice, $multicurrency = 0)
     {
         dol_syslog(get_class($this)."::getSumCreditNotesUsed", LOG_DEBUG);