diff --git a/addons/mail/static/src/js/chat_manager.js b/addons/mail/static/src/js/chat_manager.js
index 2adf913faab..27daf2ea831 100644
--- a/addons/mail/static/src/js/chat_manager.js
+++ b/addons/mail/static/src/js/chat_manager.js
@@ -4,6 +4,7 @@ odoo.define('mail.chat_manager', function (require) {
 var bus = require('bus.bus').bus;
 var utils = require('mail.utils');
 var config = require('web.config');
+var Bus = require('web.Bus');
 var core = require('web.core');
 var data = require('web.data');
 var Model = require('web.Model');
@@ -837,7 +838,7 @@ var chat_manager = {
             return message.channel_ids.length === 0 && message.model === model;
         });
     },
-    bus: new core.Bus(),
+    bus: new Bus(),
 
     create_channel: function (name, type) {
         var method = type === "dm" ? "channel_get" : "channel_create";
diff --git a/addons/web/static/src/js/framework/bus.js b/addons/web/static/src/js/framework/bus.js
new file mode 100644
index 00000000000..bf33c1fe01e
--- /dev/null
+++ b/addons/web/static/src/js/framework/bus.js
@@ -0,0 +1,16 @@
+odoo.define('web.Bus', function (require) {
+"use strict";
+
+var Class = require('web.Class');
+var mixins = require('web.mixins');
+
+/**
+ * Event Bus used to bind events scoped in the current instance
+ */
+return Class.extend(mixins.EventDispatcherMixin, {
+    init: function() {
+        mixins.EventDispatcherMixin.init.call(this, parent);
+    },
+});
+
+});
diff --git a/addons/web/static/src/js/framework/core.js b/addons/web/static/src/js/framework/core.js
index 29b461cbe8d..02a06408d9d 100644
--- a/addons/web/static/src/js/framework/core.js
+++ b/addons/web/static/src/js/framework/core.js
@@ -1,6 +1,7 @@
 odoo.define('web.core', function (require) {
 "use strict";
 
+var Bus = require('web.Bus');
 var Class = require('web.Class');
 var mixins = require('web.mixins');
 var Registry = require('web.Registry');
@@ -13,15 +14,6 @@ var debug = $.deparam($.param.querystring()).debug !== undefined;
 var _t = translation._t;
 var _lt = translation._lt;
 
-/**
- * Event Bus used to bind events scoped in the current instance
- */
-var Bus = Class.extend(mixins.EventDispatcherMixin, {
-    init: function() {
-        mixins.EventDispatcherMixin.init.call(this, parent);
-    },
-});
-
 var bus = new Bus ();
 
 _.each('click,dblclick,keydown,keypress,keyup'.split(','), function(evtype) {
diff --git a/addons/web/views/webclient_templates.xml b/addons/web/views/webclient_templates.xml
index c9b268ae55a..01aa5915aee 100644
--- a/addons/web/views/webclient_templates.xml
+++ b/addons/web/views/webclient_templates.xml
@@ -68,6 +68,7 @@
         <script type="text/javascript" src="/web/static/src/js/framework/dom_utils.js"></script>
         <script type="text/javascript" src="/web/static/src/js/framework/utils.js"></script>
         <script type="text/javascript" src="/web/static/src/js/framework/qweb.js"></script>
+        <script type="text/javascript" src="/web/static/src/js/framework/bus.js"></script>
         <script type="text/javascript" src="/web/static/src/js/framework/core.js"></script>
         <script type="text/javascript" src="/web/static/src/js/framework/dialog.js"></script>
         <script type="text/javascript" src="/web/static/src/js/framework/local_storage.js"></script>