diff --git a/position.py b/position.py
index 1205dbe..e6622dd 100644
--- a/position.py
+++ b/position.py
@@ -7,23 +7,25 @@ class ProductPosition(ModelSQL, ModelView):
     "Product Position"
     __name__ = "product.position"
     name = fields.Char('Name', required=True)
-    parent = fields.Many2One('product.position', 'Parent')
+    # parent = fields.Many2One('product.position', 'Parent')
     warehouse = fields.Many2One('stock.location', 'Warehouse', states={
         'required': True
         }, domain=[('type', '=', 'warehouse')]
     )
-    childs = fields.One2Many('product.position', 'parent', string='Children')
+    # childs = fields.One2Many('product.position', 'parent', string='Children')
 
     @classmethod
     def __setup__(cls):
         super(ProductPosition, cls).__setup__()
         cls._order.insert(0, ('name', 'ASC'))
 
-    def get_rec_name(self, name):
-        if self.parent:
-            return self.parent.get_rec_name(name) + ' / ' + self.name
-        else:
-            return self.name
+    @classmethod
+    def __register__(cls, module_name):
+        table = cls.__table_handler__(module_name)
+
+        # correction
+        if table.column_exist('parent'):
+            table.drop_column('parent')
 
 
 class ProductTemplatePosition(ModelSQL, ModelView):
@@ -35,8 +37,6 @@ class ProductTemplatePosition(ModelSQL, ModelView):
     template = fields.Many2One('product.template', 'Template',  required=True, ondelete='RESTRICT')
     warehouse  =fields.Function(fields.Many2One('stock.location', 'Warehouse'), 'on_change_with_warehouse')
 
-    def get_rec_name(self, name):
-       return '[ ' + self.position.warehouse.name + ' ]' + self.position.rec_name
 
     @fields.depends('position')
     def on_change_with_warehouse(self, name=None):
diff --git a/position.xml b/position.xml
index dd10c9b..3917cbb 100644
--- a/position.xml
+++ b/position.xml
@@ -10,27 +10,21 @@ this repository contains the full copyright notices and license terms. -->
             <field name="priority">10</field>
             <field name="name">position_tree</field>
         </record>
-        <record model="ir.ui.view" id="position_view_tree2">
-            <field name="model">product.position</field>
-            <field name="type">tree</field>
-            <field name="priority">20</field>
-            <field name="field_childs">childs</field>
-            <field name="name">position_tree2</field>
-        </record>
         <record model="ir.ui.view" id="position_view_form">
             <field name="model">product.position</field>
             <field name="type">form</field>
+            <field name="priority">20</field>
             <field name="name">position_form</field>
         </record>
 
         <record model="ir.action.act_window" id="act_position_tree">
             <field name="name">Positions</field>
             <field name="res_model">product.position</field>
-            <field name="domain" eval="[('parent', '=', None)]" pyson="1"/>
+            <field name="domain" eval="[]" pyson="1"/>
         </record>
         <record model="ir.action.act_window.view" id="act_position_tree_view1">
             <field name="sequence" eval="1"/>
-            <field name="view" ref="position_view_tree2"/>
+            <field name="view" ref="position_view_tree"/>
             <field name="act_window" ref="act_position_tree"/>
         </record>
         <record model="ir.action.act_window.view" id="act_position_tree_view2">
diff --git a/view/position_form.xml b/view/position_form.xml
index 7427405..d63fd83 100644
--- a/view/position_form.xml
+++ b/view/position_form.xml
@@ -4,15 +4,6 @@ this repository contains the full copyright notices and license terms. -->
 <form>
     <label name="name"/>
     <field name="name"/>
-    <label name="parent"/>
-    <field name="parent" widget="selection"/>
     <label name="warehouse"/>
     <field name="warehouse"/>
-    <label name="rec_name"/>
-    <field name="rec_name" colspan="3"/>
-    <notebook colspan="4">
-        <page string="Children" col="1" id="childs">
-            <field name="childs"/>
-        </page>
-    </notebook>
 </form>
diff --git a/view/position_tree.xml b/view/position_tree.xml
index fc1e4bc..165dc39 100644
--- a/view/position_tree.xml
+++ b/view/position_tree.xml
@@ -3,5 +3,5 @@
 this repository contains the full copyright notices and license terms. -->
 <tree>
     <field name="name"/>
-    <field name="rec_name"/>
+    <field name="warehouse"/>
 </tree>
diff --git a/view/position_tree2.xml b/view/position_tree2.xml
deleted file mode 100644
index c4a7efd..0000000
--- a/view/position_tree2.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0"?>
-<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
-this repository contains the full copyright notices and license terms. -->
-<tree>
-    <field name="name"/>
-</tree>