diff --git a/htdocs/comm/propal/list.php b/htdocs/comm/propal/list.php
index 987121c091b..dc4c4339f1e 100644
--- a/htdocs/comm/propal/list.php
+++ b/htdocs/comm/propal/list.php
@@ -203,7 +203,7 @@ if (empty($user->socid)) {
 $checkedtypetiers = 0;
 $arrayfields = array(
 	'p.ref'=>array('label'=>"Ref", 'checked'=>1),
-	'p.ref_client'=>array('label'=>"RefCustomer", 'checked'=>1),
+	'p.ref_client'=>array('label'=>"RefCustomer", 'checked'=>-1),
 	'pr.ref'=>array('label'=>"ProjectRef", 'checked'=>1, 'enabled'=>(empty($conf->project->enabled) ? 0 : 1)),
 	'pr.title'=>array('label'=>"ProjectLabel", 'checked'=>0, 'enabled'=>(empty($conf->project->enabled) ? 0 : 1)),
 	's.nom'=>array('label'=>"ThirdParty", 'checked'=>1),