diff --git a/pos_price_to_weight/__init__.py b/pos_price_to_weight/__init__.py
index a0fdc10..0650744 100644
--- a/pos_price_to_weight/__init__.py
+++ b/pos_price_to_weight/__init__.py
@@ -1,2 +1 @@
-# -*- coding: utf-8 -*-
 from . import models
diff --git a/pos_price_to_weight/__manifest__.py b/pos_price_to_weight/__manifest__.py
index 9a20874..87868e7 100644
--- a/pos_price_to_weight/__manifest__.py
+++ b/pos_price_to_weight/__manifest__.py
@@ -1,11 +1,10 @@
-# -*- coding: utf-8 -*-
 # Copyright (C) 2017-Today: La Louve (<http://www.lalouve.net/>)
 # @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
 {
     'name': 'Point of Sale - Price to Weight',
-    'version': '10.0.1.0.0',
+    'version': '11.0.1.0.0',
     'category': 'Point Of Sale',
     'summary': 'Compute weight based on barcodes with prices',
     'author': 'La Louve, GRAP, Odoo Community Association (OCA)',
diff --git a/pos_price_to_weight/demo/product_product.xml b/pos_price_to_weight/demo/product_product.xml
index e1d6204..14d5671 100644
--- a/pos_price_to_weight/demo/product_product.xml
+++ b/pos_price_to_weight/demo/product_product.xml
@@ -11,8 +11,8 @@ License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
         <field name="name">Apples (with Price To Weight Barcode)</field>
         <field name="barcode">0212345000007</field>
         <field name="list_price">1.50</field>
-        <field name="uom_id" ref="product.product_uom_kgm"/>
-        <field name="uom_po_id" ref="product.product_uom_kgm"/>
+        <field name="uom_id" ref="uom.product_uom_kgm"/>
+        <field name="uom_po_id" ref="uom.product_uom_kgm"/>
     </record>
 
 </odoo>
diff --git a/pos_price_to_weight/models/__init__.py b/pos_price_to_weight/models/__init__.py
index 7173a15..ba6651a 100644
--- a/pos_price_to_weight/models/__init__.py
+++ b/pos_price_to_weight/models/__init__.py
@@ -1,2 +1 @@
-# -*- coding: utf-8 -*-
 from . import barcode_rule
diff --git a/pos_price_to_weight/models/barcode_rule.py b/pos_price_to_weight/models/barcode_rule.py
index d268390..11b24fa 100644
--- a/pos_price_to_weight/models/barcode_rule.py
+++ b/pos_price_to_weight/models/barcode_rule.py
@@ -1,17 +1,14 @@
-# -*- coding: utf-8 -*-
 # Copyright (C) 2017-Today: La Louve (<http://www.lalouve.net/>)
 # @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
-from odoo import _, api, models
+from odoo import _, fields, models
 
 
 class BarcodeRule(models.Model):
     _inherit = 'barcode.rule'
 
-    @api.model
-    def _get_type_selection(self):
-        res = super(BarcodeRule, self)._get_type_selection()
-        res.append(
-            ('price_to_weight', _('Priced Product (Computed Weight)')))
-        return res
+    type = fields.Selection(selection_add=[
+        ('price_to_weight', _('Priced Product (Computed Weight)'))
+    ])
+    
\ No newline at end of file