diff --git a/account_usability/account.py b/account_usability/account.py
index 185162f..5aaad72 100644
--- a/account_usability/account.py
+++ b/account_usability/account.py
@@ -22,6 +22,8 @@ class AccountInvoice(models.Model):
     journal_id = fields.Many2one(track_visibility='onchange')
     partner_bank_id = fields.Many2one(track_visibility='onchange')
     fiscal_position_id = fields.Many2one(track_visibility='onchange')
+    # I want to see the number of cancelled invoice in chatter
+    move_id = fields.Many2one(track_visibility='onchange')
     # for invoice report
     has_discount = fields.Boolean(
         compute='_compute_has_discount', readonly=True)
diff --git a/account_usability/account_view.xml b/account_usability/account_view.xml
index d57c4b3..5043002 100644
--- a/account_usability/account_view.xml
+++ b/account_usability/account_view.xml
@@ -122,6 +122,14 @@ module -->
     <field name="context">{'show_invoice_fields': True}</field>
 </record>
 
+<record id="out_invoice_refund_line_action" model="ir.actions.act_window">
+    <field name="name">Customer Invoice Lines</field>
+    <field name="res_model">account.invoice.line</field>
+    <field name="view_mode">tree,form</field>
+    <field name="domain">[('invoice_type', 'in', ('out_invoice', 'out_refund'))]</field>
+    <field name="context">{'show_invoice_fields': True}</field>
+</record>
+
 <record id="in_invoice_line_action" model="ir.actions.act_window">
     <field name="name">Supplier Invoice Lines</field>
     <field name="res_model">account.invoice.line</field>
@@ -138,6 +146,14 @@ module -->
     <field name="context">{'show_invoice_fields': True}</field>
 </record>
 
+<record id="in_invoice_refund_line_action" model="ir.actions.act_window">
+    <field name="name">Supplier Invoice Lines</field>
+    <field name="res_model">account.invoice.line</field>
+    <field name="view_mode">tree,form</field>
+    <field name="domain">[('invoice_type', 'in', ('in_invoice', 'in_refund'))]</field>
+    <field name="context">{'show_invoice_fields': True}</field>
+</record>
+
 <!-- model account.move.line / Journal Items -->
 <record id="account.action_account_moves_all_a" model="ir.actions.act_window">
     <field name="limit">200</field>
diff --git a/sale_from_private_stock/sale_private_stock.py b/sale_from_private_stock/sale_private_stock.py
index d65cc8a..3344e13 100644
--- a/sale_from_private_stock/sale_private_stock.py
+++ b/sale_from_private_stock/sale_private_stock.py
@@ -19,7 +19,7 @@ class ResPartner(models.Model):
     default_sale_route_id = fields.Many2one(
         'stock.location.route', string="Default Stock Location Route",
         company_dependent=True,
-        help="Stock location route used by default in sale order lines"
+        help="Stock location route used by default in sale order lines "
         "for this customer.")
 
     @api.multi