diff --git a/testserver_o2b/views/views.xml b/testserver_o2b/views/views.xml
index 3f3cd7e..385ac97 100644
--- a/testserver_o2b/views/views.xml
+++ b/testserver_o2b/views/views.xml
@@ -43,7 +43,7 @@
     <record id="testserver_o2b_action_window" model="ir.actions.act_window">
         <field name="name">Mailcatcher</field>
         <field name="res_model">res.config.settings</field>
-        <field name="view_mode">form</field>
+        <field name="view_mode">tree,form</field>
     </record>