diff --git a/htdocs/core/actions_massactions.inc.php b/htdocs/core/actions_massactions.inc.php
index 381adbff567..9ca7fa03cca 100644
--- a/htdocs/core/actions_massactions.inc.php
+++ b/htdocs/core/actions_massactions.inc.php
@@ -565,6 +565,7 @@ if ($massaction == 'confirm_createbills')
             $objecttmp->cond_reglement_id	= $cmd->cond_reglement_id;
             $objecttmp->mode_reglement_id	= $cmd->mode_reglement_id;
             $objecttmp->fk_project			= $cmd->fk_project;
+            if (empty($createbills_onebythird)) $objecttmp->ref_client = $cmd->ref_client;
 
             $datefacture = dol_mktime(12, 0, 0, $_POST['remonth'], $_POST['reday'], $_POST['reyear']);
             if (empty($datefacture))