diff --git a/htdocs/compta/paiement/class/paiement.class.php b/htdocs/compta/paiement/class/paiement.class.php
index 94c5971a416..67ab5fc3c22 100644
--- a/htdocs/compta/paiement/class/paiement.class.php
+++ b/htdocs/compta/paiement/class/paiement.class.php
@@ -283,7 +283,7 @@ class Paiement extends CommonObject
         $this->db->begin();
 
 		$this->ref = $this->getNextNumRef(is_object($thirdparty) ? $thirdparty : '');
-		
+
 		if (empty($this->ref_ext)) {
 			$this->ref_ext = '';
 		}