diff --git a/include/class_acc_operation.php b/include/class_acc_operation.php
index 33fb313b1..559b6cde0 100644
--- a/include/class_acc_operation.php
+++ b/include/class_acc_operation.php
@@ -489,7 +489,7 @@ class Acc_Operation
     function get_quant()
     {
         $ledger_id=$this->get_ledger();
-        if ( $ledger_id=='') throw new Exception('Journal non trouvé');
+        if ( $ledger_id=='') throw new Exception(_('Journal non trouvé'));
         $oledger=new Acc_Ledger($this->db,$ledger_id);
 
         // retrieve info from jrn_info