diff --git a/addons/mail/static/src/js/mail.js b/addons/mail/static/src/js/mail.js
index 20c8b14c817..fad6d40c99f 100644
--- a/addons/mail/static/src/js/mail.js
+++ b/addons/mail/static/src/js/mail.js
@@ -138,7 +138,7 @@ openerp.mail = function (session) {
                 default_parent_id: false }, options.context || {});
 
             // data of this message
-            this.id = datasets.id ||  -1,
+            this.id = datasets.id ||  false,
             this.last_id = this.id,
             this.model = datasets.model || false,
             this.res_model = datasets.res_model ||  false;
diff --git a/addons/mail/wizard/mail_compose_message_view.xml b/addons/mail/wizard/mail_compose_message_view.xml
index 1f00ed419a2..bde84b01a8a 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="1"/>
-                        <field name="model" invisible="1"/>
-                        <field name="res_id" invisible="1"/>
-                        <field name="parent_id" invisible="1"/>
-                        <field name="content_subtype" invisible="1"/>
+                        <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"/>
                         <!-- visible wizard -->
                         <field name="partner_ids" widget="many2many_tags" placeholder="Add contacts to notify..."
                                 context="{'force_email':True}"