diff --git a/htdocs/compta/facture.php b/htdocs/compta/facture.php
index 5f9fb737f5e..209befd462f 100644
--- a/htdocs/compta/facture.php
+++ b/htdocs/compta/facture.php
@@ -1837,7 +1837,8 @@ else
      */
     if ($id > 0 || ! empty($ref))
     {
-        if ($mesg) print $mesg.'<br>';
+        if (preg_match('/class="error"/',$mesg)) dol_htmloutput_error($mesg);
+        else dol_htmloutput_mesg($mesg);
 
         $result=$object->fetch($id,$ref);
         if ($result > 0)