diff --git a/addons/event/views/event_views.xml b/addons/event/views/event_views.xml
index f3029824812..fab3505be7c 100644
--- a/addons/event/views/event_views.xml
+++ b/addons/event/views/event_views.xml
@@ -722,7 +722,7 @@
             </field>
         </record>
 
-        <record model="ir.actions.act_window" id="action_registration">
+        <record id="action_registration" model="ir.actions.act_window">
             <field name="name">Attendees</field>
             <field name="res_model">event.registration</field>
             <field name="domain"></field>
diff --git a/addons/event_sale/wizard/event_edit_registration.xml b/addons/event_sale/wizard/event_edit_registration.xml
index 54f9d578a0f..897bf34322c 100644
--- a/addons/event_sale/wizard/event_edit_registration.xml
+++ b/addons/event_sale/wizard/event_edit_registration.xml
@@ -17,6 +17,7 @@
                             <field name="email"/>
                             <field name="mobile" class="o_force_ltr"/>
                             <field name="phone" class="o_force_ltr"/>
+                            <field name="sale_order_line_id" invisible="1"/>
                         </tree>
                     </field>
                     <footer>