diff --git a/CHANGELOG b/CHANGELOG
index 142895addb..db94a58be5 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,4 @@
+* Remove ir.action.wizard_size
 * Rename expand and fill attributes into yexpand and yfill
 * Add xalign and yalign as field attributes
 * Drop support of Python 2.5
diff --git a/trytond/ir/action.py b/trytond/ir/action.py
index cbd5cbd750..8be92988f6 100644
--- a/trytond/ir/action.py
+++ b/trytond/ir/action.py
@@ -663,89 +663,6 @@ class ActionWizard(ModelSQL, ModelView):
 ActionWizard()
 
 
-class ActionWizardSize(ModelSQL, ModelView):
-    "Action Wizard Size"
-    _name = 'ir.action.wizard_size'
-    _description = __doc__
-    wizard = fields.Char('Wizard', required=True, select=1)
-    model = fields.Char('Model', required=True, select=1)
-    user = fields.Many2One('res.user', 'User', required=True,
-            ondelete='CASCADE', select=1)
-    width = fields.Integer('Width')
-    height = fields.Integer('Height')
-
-    def __init__(self):
-        super(ActionWizardSize, self).__init__()
-        self._rpc.update({
-            'set_size': True,
-        })
-
-    def create(self, vals):
-        res = super(ActionWizardSize, self).create(vals)
-        # Restart the cache for get_size
-        self.get_size.reset()
-        return res
-
-    def write(self, ids, vals):
-        res = super(ActionWizardSize, self).write(ids, vals)
-        # Restart the cache for get_size
-        self.get_size.reset()
-        return res
-
-    def delete(self, ids):
-        res = super(ActionWizardSize, self).delete(ids)
-        # Restart the cache for get_size
-        self.get_size.reset()
-        return res
-
-    def set_size(self, wizard, model, width, height):
-        '''
-        Set size for wizard dialog.
-        :param wizard: the wizard name
-        :param model: the model name
-        :param width: the width
-        :param height: the height
-        '''
-        ids = self.search([
-            ('user', '=', Transaction().user),
-            ('wizard', '=', wizard),
-            ('model', '=', model),
-            ])
-        if ids:
-            self.write(ids, {
-                'width': width,
-                'height': height,
-                })
-        else:
-            self.create({
-                'wizard': wizard,
-                'model': model,
-                'user': Transaction().user,
-                'width': width,
-                'height': height,
-                })
-
-    @Cache('ir.action.wizard_size.get_size')
-    def get_size(self, wizard, model):
-        '''
-        Get size for wizard dialog.
-        :param wizard: the wizard name
-        :param model: the model name
-        :return: (width, height)
-        '''
-        ids = self.search([
-            ('user', '=', Transaction().user),
-            ('wizard', '=', wizard),
-            ('model', '=', model),
-            ], limit=1)
-        if ids:
-            wizard_size = self.browse(ids[0])
-            return wizard_size.width, wizard_size.height
-        return (0, 0)
-
-ActionWizardSize()
-
-
 class ActionURL(ModelSQL, ModelView):
     "Action URL"
     _name = 'ir.action.url'
diff --git a/trytond/ir/action.xml b/trytond/ir/action.xml
index 0fd88dbc8c..08a28fbad6 100644
--- a/trytond/ir/action.xml
+++ b/trytond/ir/action.xml
@@ -331,63 +331,6 @@ this repository contains the full copyright notices and license terms. -->
         <menuitem parent="menu_action"
             action="act_action_wizard_form" id="menu_action_wizard"/>
 
-        <record model="ir.ui.view" id="action_wizard_size_view_form">
-            <field name="model">ir.action.wizard_size</field>
-            <field name="type">form</field>
-            <field name="arch" type="xml">
-                <![CDATA[
-                <form string="Wizard Size">
-                    <label name="wizard"/>
-                    <field name="wizard"/>
-                    <label name="model"/>
-                    <field name="model"/>
-                    <label name="user"/>
-                    <field name="user"/>
-                    <newline/>
-                    <label name="width"/>
-                    <field name="width"/>
-                    <label name="height"/>
-                    <field name="height"/>
-                </form>
-                ]]>
-            </field>
-        </record>
-
-        <record model="ir.ui.view" id="action_wizard_size_view_tree">
-            <field name="model">ir.action.wizard_size</field>
-            <field name="type">tree</field>
-            <field name="arch" type="xml">
-                <![CDATA[
-                <tree string="Wizard Sizes">
-                    <field name="wizard"/>
-                    <field name="model"/>
-                    <field name="user"/>
-                    <field name="width"/>
-                    <field name="height"/>
-                </tree>
-                ]]>
-            </field>
-        </record>
-        <record model="ir.action.act_window" id="act_action_wizard_size_form">
-            <field name="name">Wizard Sizes</field>
-            <field name="type">ir.action.act_window</field>
-            <field name="res_model">ir.action.wizard_size</field>
-        </record>
-        <record model="ir.action.act_window.view"
-            id="act_action_wizard_size_form_view1">
-            <field name="sequence" eval="1"/>
-            <field name="view" ref="action_wizard_size_view_tree"/>
-            <field name="act_window" ref="act_action_wizard_size_form"/>
-        </record>
-        <record model="ir.action.act_window.view"
-            id="act_action_wizard_size_form_view2">
-            <field name="sequence" eval="2"/>
-            <field name="view" ref="action_wizard_size_view_form"/>
-            <field name="act_window" ref="act_action_wizard_size_form"/>
-        </record>
-        <menuitem parent="menu_action_wizard"
-            action="act_action_wizard_size_form" id="menu_action_wizard_size"/>
-
         <record model="ir.ui.view" id="action_url_view_form">
             <field name="model">ir.action.url</field>
             <field name="type">form</field>
diff --git a/trytond/res/ir.xml b/trytond/res/ir.xml
index c7e2d0c63e..5b61b063b9 100644
--- a/trytond/res/ir.xml
+++ b/trytond/res/ir.xml
@@ -486,10 +486,6 @@ this repository contains the full copyright notices and license terms. -->
             <field name="menu" ref="ir.menu_action_wizard"/>
             <field name="group" ref="group_admin"/>
         </record>
-        <record model="ir.ui.menu-res.group" id="menu_action_wizard_size_group_admin">
-            <field name="menu" ref="ir.menu_action_wizard_size"/>
-            <field name="group" ref="group_admin"/>
-        </record>
         <record model="ir.ui.menu-res.group" id="menu_action_url_group_admin">
             <field name="menu" ref="ir.menu_action_url"/>
             <field name="group" ref="group_admin"/>
diff --git a/trytond/wizard/wizard.py b/trytond/wizard/wizard.py
index 320571c638..9fbb1a8e40 100644
--- a/trytond/wizard/wizard.py
+++ b/trytond/wizard/wizard.py
@@ -103,7 +103,6 @@ class Wizard(WarningErrorMixin, URLMixin):
     def execute(self, wiz_id, data, state='init'):
         pool = Pool()
         translation_obj = pool.get('ir.translation')
-        wizard_size_obj = pool.get('ir.action.wizard_size')
         res = {}
 
         if self._datas.get(wiz_id, {}).get('user') != Transaction().user:
@@ -159,8 +158,6 @@ class Wizard(WarningErrorMixin, URLMixin):
             res['fields'] = fields
             res['arch'] = arch
             res['state'] = button_list
-            res['size'] = wizard_size_obj.get_size(self._name,
-                    result_def['object'])
         elif result_def['type'] == 'choice':
             next_state = getattr(self, result_def['next_state'])(data)
             if next_state == 'end':