diff --git a/addons/purchase/models/purchase.py b/addons/purchase/models/purchase.py
index f29e7913489..7618a6b1389 100644
--- a/addons/purchase/models/purchase.py
+++ b/addons/purchase/models/purchase.py
@@ -607,7 +607,8 @@ class PurchaseOrder(models.Model):
             raise UserError(_('Please define an accounting purchase journal for the company %s (%s).') % (self.company_id.name, self.company_id.id))
 
         partner_invoice = self.env['res.partner'].browse(self.partner_id.address_get(['invoice'])['invoice'])
-        partner_bank_id = self.partner_id.bank_ids.filtered_domain(['|', ('company_id', '=', False), ('company_id', '=', self.company_id.id)])[:1]
+        partner_bank_id = self.partner_id.commercial_partner_id.bank_ids.filtered_domain(['|', ('company_id', '=', False), ('company_id', '=', self.company_id.id)])[:1]
+
         invoice_vals = {
             'ref': self.partner_ref or '',
             'move_type': move_type,