diff --git a/addons/account/models/account_invoice.py b/addons/account/models/account_invoice.py
index fdc5bf4c031..4fe54d0b77b 100644
--- a/addons/account/models/account_invoice.py
+++ b/addons/account/models/account_invoice.py
@@ -969,7 +969,7 @@ class AccountInvoice(models.Model):
 
         values['invoice_line_ids'] = self._refund_cleanup_lines(invoice.invoice_line_ids)
 
-        tax_lines = filter(lambda l: l.manual, invoice.tax_line_ids)
+        tax_lines = invoice.tax_line_ids
         values['tax_line_ids'] = self._refund_cleanup_lines(tax_lines)
 
         if journal_id:
diff --git a/addons/account/wizard/account_invoice_refund.py b/addons/account/wizard/account_invoice_refund.py
index 33cba1f0984..b22f7af593e 100644
--- a/addons/account/wizard/account_invoice_refund.py
+++ b/addons/account/wizard/account_invoice_refund.py
@@ -58,7 +58,6 @@ class AccountInvoiceRefund(models.TransientModel):
                 date = form.date or False
                 description = form.description or inv.name
                 refund = inv.refund(form.date_invoice, date, description, inv.journal_id.id)
-                refund.compute_taxes()
 
                 created_inv.append(refund.id)
                 if mode in ('cancel', 'modify'):