diff --git a/addons/mail/views/mail_mail_views.xml b/addons/mail/views/mail_mail_views.xml
index 16e9cc1b4c3..4de6bd099f5 100644
--- a/addons/mail/views/mail_mail_views.xml
+++ b/addons/mail/views/mail_mail_views.xml
@@ -5,7 +5,7 @@
             <field name="name">mail.mail.form</field>
             <field name="model">mail.mail</field>
             <field name="arch" type="xml">
-                <form string="Email message">
+                <form string="Email message" duplicate="0">
                     <header>
                         <button name="send" string="Send Now" type="object" states='outgoing' class="oe_highlight"/>
                         <button name="mark_outgoing" string="Retry" type="object" states='exception,cancel'/>
diff --git a/addons/mail/views/mail_message_views.xml b/addons/mail/views/mail_message_views.xml
index 96de1f13d5a..1ffcf4ae716 100644
--- a/addons/mail/views/mail_message_views.xml
+++ b/addons/mail/views/mail_message_views.xml
@@ -23,7 +23,7 @@
             <field name="model">mail.message</field>
             <field name="priority">20</field>
             <field name="arch" type="xml">
-                <form string="Message">
+                <form string="Message" duplicate="0">
                     <sheet>
                         <div class="oe_button_box" name="button_box">
                             <button name="action_open_document" string="Open Document"
diff --git a/addons/mail/views/mail_notification_views.xml b/addons/mail/views/mail_notification_views.xml
index 1b2920a01c3..df5f1d4321a 100644
--- a/addons/mail/views/mail_notification_views.xml
+++ b/addons/mail/views/mail_notification_views.xml
@@ -18,7 +18,7 @@
         <field name="name">mail.notification.view.form</field>
         <field name="model">mail.notification</field>
         <field name="arch" type="xml">
-            <form string="Notification">
+            <form string="Notification" duplicate="0">
                 <header>
                     <field name="notification_status" widget="statusbar"/>
                 </header>