diff --git a/addons/account/models/account_invoice.py b/addons/account/models/account_invoice.py
index 8a2b74b0083..3841f66e16d 100644
--- a/addons/account/models/account_invoice.py
+++ b/addons/account/models/account_invoice.py
@@ -49,7 +49,7 @@ class AccountInvoice(models.Model):
         self.amount_total = self.amount_untaxed + self.amount_tax
         amount_total_company_signed = self.amount_total
         amount_untaxed_signed = self.amount_untaxed
-        if self.currency_id and self.currency_id != self.company_id.currency_id:
+        if self.currency_id and self.company_id and self.currency_id != self.company_id.currency_id:
             currency_id = self.currency_id.with_context(date=self.date_invoice)
             amount_total_company_signed = currency_id.compute(self.amount_total, self.company_id.currency_id)
             amount_untaxed_signed = currency_id.compute(self.amount_untaxed, self.company_id.currency_id)
@@ -1103,7 +1103,7 @@ class AccountInvoiceLine(models.Model):
         if self.invoice_line_tax_ids:
             taxes = self.invoice_line_tax_ids.compute_all(price, currency, self.quantity, product=self.product_id, partner=self.invoice_id.partner_id)
         self.price_subtotal = price_subtotal_signed = taxes['total_excluded'] if taxes else self.quantity * price
-        if self.invoice_id.currency_id and self.invoice_id.currency_id != self.invoice_id.company_id.currency_id:
+        if self.invoice_id.currency_id and self.invoice_id.company_id and self.invoice_id.currency_id != self.invoice_id.company_id.currency_id:
             price_subtotal_signed = self.invoice_id.currency_id.compute(price_subtotal_signed, self.invoice_id.company_id.currency_id)
         sign = self.invoice_id.type in ['in_refund', 'out_refund'] and -1 or 1
         self.price_subtotal_signed = price_subtotal_signed * sign