diff --git a/account_usability/account.py b/account_usability/account.py
index 556e33e..6d3fb3d 100644
--- a/account_usability/account.py
+++ b/account_usability/account.py
@@ -42,45 +42,6 @@ class AccountInvoice(models.Model):
     partner_bank_id = fields.Many2one(track_visibility='onchange')
     fiscal_position = fields.Many2one(track_visibility='onchange')
 
-    @api.multi
-    def action_move_create(self):
-        res = super(AccountInvoice, self).action_move_create()
-        today = fields.Date.context_today(self)
-        # When empty, the invoice_date is set by action_move_create()
-        for invoice in self:
-            if invoice.date_invoice > today:
-                raise UserError(_(
-                    "You cannot validate the invoice of '%s' "
-                    " with an invoice date (%s) in the future !") % (
-                        invoice.partner_id.name_get()[0][1],
-                        invoice.date_invoice))
-            if (
-                    not invoice.internal_number and
-                    invoice.type in ('out_invoice', 'out_refund')):
-                previous_invoices = self.search([
-                    ('journal_id', '=', invoice.journal_id.id),
-                    ('date_invoice', '!=', False),
-                    ('internal_number', '!=', False),
-                    ], order='date_invoice desc', limit=1)
-                if (
-                        previous_invoices and
-                        previous_invoices[0].date_invoice >
-                        invoice.date_invoice):
-                    raise UserError(_(
-                        "You cannot validate the invoice for '%s' "
-                        "with an invoice date %s because another invoice "
-                        "number %s is dated %s in the same journal. "
-                        "In order to have a coherent "
-                        "invoice number sequence, the date of this invoice "
-                        "should the same or a later date as the "
-                        "previous one in the same journal.") % (
-                            invoice.partner_id.name_get()[0][1],
-                            invoice.date_invoice,
-                            previous_invoices[0].internal_number,
-                            previous_invoices[0].date_invoice,
-                            ))
-        return res
-
     @api.multi
     def onchange_payment_term_date_invoice(self, payment_term_id, date_invoice):
         res = super(AccountInvoice, self).onchange_payment_term_date_invoice(