diff --git a/addons/mail/static/src/js/client_action.js b/addons/mail/static/src/js/client_action.js
index a0c22add842..a1882fa2773 100644
--- a/addons/mail/static/src/js/client_action.js
+++ b/addons/mail/static/src/js/client_action.js
@@ -191,6 +191,7 @@ var ChatAction = Widget.extend(ControlPanelMixin, {
             chat_manager.mark_all_as_read();
         });
         this.$buttons.on('click', '.o_mail_chat_button_unstar_all', chat_manager.unstar_all);
+        this.$buttons.on('click', '.o_mail_chat_button_new_message', this.on_click_new_message);
 
         this.thread.on('redirect', this, function (res_model, res_id) {
             chat_manager.redirect(res_model, res_id, this.set_channel.bind(this));
@@ -375,7 +376,7 @@ var ChatAction = Widget.extend(ControlPanelMixin, {
                 .find('.o_mail_chat_button_invite, .o_mail_chat_button_unsubscribe, .o_mail_chat_button_settings')
                 .toggle(channel.type !== "dm" && channel.type !== 'static');
             self.$buttons
-                .find('.o_mail_chat_button_mark_read')
+                .find('.o_mail_chat_button_mark_read, .o_mail_chat_button_new_message')
                 .toggle(channel.id === "channel_inbox");
             self.$buttons
                 .find('.o_mail_chat_button_unstar_all')
@@ -591,6 +592,16 @@ var ChatAction = Widget.extend(ControlPanelMixin, {
             target: 'current'
         });
     },
+    on_click_new_message: function () {
+        this.do_action({
+            type: 'ir.actions.act_window',
+            res_model: 'mail.compose.message',
+            view_mode: 'form',
+            view_type: 'form',
+            views: [[false, 'form']],
+            target: 'new',
+        });
+    },
 });
 
 
diff --git a/addons/mail/static/src/js/systray.js b/addons/mail/static/src/js/systray.js
index 19e225c364f..293521ec045 100644
--- a/addons/mail/static/src/js/systray.js
+++ b/addons/mail/static/src/js/systray.js
@@ -3,7 +3,6 @@ odoo.define('mail.systray', function (require) {
 
 var core = require('web.core');
 var SystrayMenu = require('web.SystrayMenu');
-var web_client = require('web.web_client');
 var Widget = require('web.Widget');
 
 var chat_manager = require('mail.chat_manager');
@@ -41,33 +40,4 @@ var NotificationTopButton = Widget.extend({
 
 SystrayMenu.Items.push(NotificationTopButton);
 
-
-
-/**
- *  * Global ComposeMessage Top Button
- *   *
- *    * Add a link on the top user bar to write a full mail. It opens the form view
- *     * of the mail.compose.message (in a modal).
- *      */
-var ComposeMessageTopButton = Widget.extend({
-    template:'mail.ComposeMessageTopButton',
-    events: {
-        "click": "on_compose_message",
-    },
-    on_compose_message: function (ev) {
-        ev.preventDefault();
-        web_client.action_manager.do_action({
-            type: 'ir.actions.act_window',
-            res_model: 'mail.compose.message',
-            view_mode: 'form',
-            view_type: 'form',
-            views: [[false, 'form']],
-            target: 'new',
-        });
-    },
-});
-
-// Put the ComposeMessageTopButton widget in the systray menu
-SystrayMenu.Items.push(ComposeMessageTopButton);
-
 });
diff --git a/addons/mail/static/src/xml/client_action.xml b/addons/mail/static/src/xml/client_action.xml
index ac60afc3e58..55be6233d22 100644
--- a/addons/mail/static/src/xml/client_action.xml
+++ b/addons/mail/static/src/xml/client_action.xml
@@ -124,6 +124,7 @@
             <button type="button" class="btn btn-primary btn-sm o_mail_chat_button_detach hidden-xs" title="Detach the conversation">Detach</button>
             <button type="button" class="btn btn-primary btn-sm o_mail_chat_button_mark_read" title="Mark all as read">Mark all read</button>
             <button type="button" class="btn btn-primary btn-sm o_mail_chat_button_unstar_all" title="Unstar all messages">Unstar all</button>
+            <button type="button" class="btn btn-default btn-sm o_mail_chat_button_new_message" title="Compose a new message">New message</button>
             <button type="button" class="btn btn-default btn-sm o_mail_chat_button_unsubscribe" title="Unsubscribe from channel">Unsubscribe</button>
             <button type="button" class="btn btn-default btn-sm o_mail_chat_button_settings" title="Open channel settings">Settings</button>
         </div>
diff --git a/addons/mail/static/src/xml/systray.xml b/addons/mail/static/src/xml/systray.xml
index 5318f30b3dd..e503f87e095 100644
--- a/addons/mail/static/src/xml/systray.xml
+++ b/addons/mail/static/src/xml/systray.xml
@@ -1,12 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <templates>
-    <t t-name="mail.ComposeMessageTopButton">
-        <li title='Compose new Message' class="oe_topbar_item oe_topbar_compose_full_email">
-            <a href="#">
-                <i class="fa fa-envelope-o fa-fw"></i>
-            </a>
-        </li>
-    </t>
 
     <t t-name="mail.chat.NotificationTopButton">
         <li title="Notifications">