diff --git a/addons/mail/wizard/mail_compose_message_view.xml b/addons/mail/wizard/mail_compose_message_view.xml
index f9b79b7b282..86b1be6562f 100644
--- a/addons/mail/wizard/mail_compose_message_view.xml
+++ b/addons/mail/wizard/mail_compose_message_view.xml
@@ -8,11 +8,11 @@
                 <form string="Compose Email" version="7.0">
                     <group>
                         <!-- truly invisible fields for control and options -->
-                        <field name="composition_mode" invisible="0"/>
-                        <field name="model" invisible="0"/>
-                        <field name="res_id" invisible="0"/>
-                        <field name="parent_id" invisible="0"/>
-                        <field name="content_subtype" invisible="0"/>
+                        <field name="composition_mode" invisible="1"/>
+                        <field name="model" invisible="1"/>
+                        <field name="res_id" invisible="1"/>
+                        <field name="parent_id" invisible="1"/>
+                        <field name="content_subtype" invisible="1"/>
                         <!-- visible wizard -->
                         <label for="partner_ids" string="Recipients"/>
                         <div>