diff --git a/addons/web/static/src/js/coresetup.js b/addons/web/static/src/js/coresetup.js
index 6ba62162e93..44e2d3aba78 100644
--- a/addons/web/static/src/js/coresetup.js
+++ b/addons/web/static/src/js/coresetup.js
@@ -11,32 +11,6 @@ if (!console.debug) {
 
 openerp.web.coresetup = function(instance) {
 
-/**
- * @deprecated use :class:`instance.web.Widget`
- */
-instance.web.OldWidget = instance.web.Widget.extend({
-    init: function(parent, element_id) {
-        this._super(parent);
-        this.element_id = element_id;
-        this.element_id = this.element_id || _.uniqueId('widget-');
-
-        var tmp = document.getElementById(this.element_id);
-        this.setElement(tmp || this._make_descriptive());
-    },
-    renderElement: function() {
-        var rendered = this.render();
-        if (rendered) {
-            this.replaceElement($(rendered));
-        }
-        return this;
-    },
-    render: function (additional) {
-        if (this.template)
-            return instance.web.qweb.render(this.template, _.extend({widget: this}, additional || {}));
-        return null;
-    }
-});
-
 /** Session openerp specific RPC class */
 instance.web.Session = instance.web.JsonRPC.extend( /** @lends instance.web.Session# */{
     init: function() {
diff --git a/addons/web_kanban/static/src/js/kanban.js b/addons/web_kanban/static/src/js/kanban.js
index 0f55975ff33..fe14b4c697f 100644
--- a/addons/web_kanban/static/src/js/kanban.js
+++ b/addons/web_kanban/static/src/js/kanban.js
@@ -563,7 +563,7 @@ instance.web_kanban.KanbanRecord = instance.web.Widget.extend({
         });
         return new_record;
     },
-    render: function() {
+    renderElement: function() {
         this.qweb_context = {
             record: this.record,
             widget: this,
@@ -574,9 +574,11 @@ instance.web_kanban.KanbanRecord = instance.web.Widget.extend({
                 this.qweb_context[p] = _.bind(this[p], this);
             }
         }
-        return this._super({
+        var $el = instance.web.qweb.render(this.template, {
+            'widget': this,
             'content': this.view.qweb.render('kanban-box', this.qweb_context)
         });
+        this.replaceElement($el);
     },
     bind_events: function() {
         var self = this;
diff --git a/addons/web_mobile/static/src/js/chrome_mobile.js b/addons/web_mobile/static/src/js/chrome_mobile.js
index 029e4bce49b..fce7aed6d48 100644
--- a/addons/web_mobile/static/src/js/chrome_mobile.js
+++ b/addons/web_mobile/static/src/js/chrome_mobile.js
@@ -11,7 +11,33 @@ instance.web_mobile.mobilewebclient = function(element_id) {
     return client;
 };
 
-instance.web_mobile.MobileWebClient = instance.web.OldWidget.extend({
+/**
+ * @deprecated use :class:`instance.web.Widget`
+ */
+instance.web_mobile.MobileWidget = instance.web.Widget.extend({
+    init: function(parent, element_id) {
+        this._super(parent);
+        this.element_id = element_id;
+        this.element_id = this.element_id || _.uniqueId('widget-');
+
+        var tmp = document.getElementById(this.element_id);
+        this.setElement(tmp || this._make_descriptive());
+    },
+    renderElement: function() {
+        var rendered = this.render();
+        if (rendered) {
+            this.replaceElement($(rendered));
+        }
+        return this;
+    },
+    render: function (additional) {
+        if (this.template)
+            return instance.web.qweb.render(this.template, _.extend({widget: this}, additional || {}));
+        return null;
+    }
+});
+
+instance.web_mobile.MobileWebClient = instance.web_mobile.MobileWidget.extend({
 
     template: "WebClient",
 
@@ -31,7 +57,7 @@ instance.web_mobile.MobileWebClient = instance.web.OldWidget.extend({
     }
 });
 
-instance.web_mobile.Login =  instance.web.OldWidget.extend({
+instance.web_mobile.Login =  instance.web_mobile.MobileWidget.extend({
 
     template: "Login",
 
@@ -118,7 +144,7 @@ instance.web_mobile.Login =  instance.web.OldWidget.extend({
     }
 });
 
-instance.web_mobile.Header =  instance.web.OldWidget.extend({
+instance.web_mobile.Header =  instance.web_mobile.MobileWidget.extend({
 
     template: "Header",
 
@@ -130,7 +156,7 @@ instance.web_mobile.Header =  instance.web.OldWidget.extend({
     }
 });
 
-instance.web_mobile.Footer =  instance.web.OldWidget.extend({
+instance.web_mobile.Footer =  instance.web_mobile.MobileWidget.extend({
 
     template: "Footer",
 
@@ -142,7 +168,7 @@ instance.web_mobile.Footer =  instance.web.OldWidget.extend({
     }
 });
 
-instance.web_mobile.Shortcuts =  instance.web.OldWidget.extend({
+instance.web_mobile.Shortcuts =  instance.web_mobile.MobileWidget.extend({
 
     template: "Shortcuts",
 
@@ -181,7 +207,7 @@ instance.web_mobile.Shortcuts =  instance.web.OldWidget.extend({
     }
 });
 
-instance.web_mobile.Menu =  instance.web.OldWidget.extend({
+instance.web_mobile.Menu =  instance.web_mobile.MobileWidget.extend({
 
     template: "Menu",
 
@@ -247,7 +273,7 @@ instance.web_mobile.Menu =  instance.web.OldWidget.extend({
     }
 });
 
-instance.web_mobile.Secondary =  instance.web.OldWidget.extend({
+instance.web_mobile.Secondary =  instance.web_mobile.MobileWidget.extend({
 
     template: "Menu.secondary",
 
@@ -304,7 +330,7 @@ instance.web_mobile.Secondary =  instance.web.OldWidget.extend({
     }
 });
 
-instance.web_mobile.Options =  instance.web.OldWidget.extend({
+instance.web_mobile.Options =  instance.web_mobile.MobileWidget.extend({
 
     template: "Options",
 
diff --git a/addons/web_mobile/static/src/js/form_mobile.js b/addons/web_mobile/static/src/js/form_mobile.js
index c3c2025ac1f..6b3cd09175e 100644
--- a/addons/web_mobile/static/src/js/form_mobile.js
+++ b/addons/web_mobile/static/src/js/form_mobile.js
@@ -4,7 +4,7 @@
 
 openerp.web_mobile.form_mobile = function (instance) {
 
-instance.web_mobile.FormView = instance.web.OldWidget.extend({
+instance.web_mobile.FormView = instance.web_mobile.MobileWidget.extend({
 
     template: 'FormView',
 
diff --git a/addons/web_mobile/static/src/js/list_mobile.js b/addons/web_mobile/static/src/js/list_mobile.js
index abe5620a0a3..b48753c82f2 100644
--- a/addons/web_mobile/static/src/js/list_mobile.js
+++ b/addons/web_mobile/static/src/js/list_mobile.js
@@ -4,7 +4,7 @@
 
 openerp.web_mobile.list_mobile = function (instance) {
 
-instance.web_mobile.ListView = instance.web.OldWidget.extend({
+instance.web_mobile.ListView = instance.web_mobile.MobileWidget.extend({
 
     template: 'ListView',