diff --git a/addons/purchase/models/purchase.py b/addons/purchase/models/purchase.py
index 4ce0b837396..83169ba7325 100644
--- a/addons/purchase/models/purchase.py
+++ b/addons/purchase/models/purchase.py
@@ -599,6 +599,8 @@ class PurchaseOrderLine(models.Model):
             self.date_planned = self._get_date_planned(seller).strftime(DEFAULT_SERVER_DATETIME_FORMAT)
 
         if not seller:
+            if self.product_id.seller_ids.filtered(lambda s: s.name.id == self.partner_id.id):
+                self.price_unit = 0.0
             return
 
         price_unit = self.env['account.tax']._fix_tax_included_price_company(seller.price, self.product_id.supplier_taxes_id, self.taxes_id, self.company_id) if seller else 0.0