diff --git a/addons/account/models/account_invoice.py b/addons/account/models/account_invoice.py
index 6163bdbfc90..6e64860f700 100644
--- a/addons/account/models/account_invoice.py
+++ b/addons/account/models/account_invoice.py
@@ -84,7 +84,7 @@ class AccountInvoice(models.Model):
     def _compute_residual(self):
         residual = 0.0
         residual_company_signed = 0.0
-        sign = self.type in ['in_refund', 'in_invoice'] and -1 or 1
+        sign = self.type in ['in_refund', 'out_refund'] and -1 or 1
         for line in self.sudo().move_id.line_ids:
             if line.account_id.internal_type in ('receivable', 'payable'):
                 residual_company_signed += line.amount_residual * sign