diff --git a/addons/sale/models/sale.py b/addons/sale/models/sale.py
index 7d877ab8279..e486183cb69 100644
--- a/addons/sale/models/sale.py
+++ b/addons/sale/models/sale.py
@@ -1454,7 +1454,7 @@ class SaleOrderLine(models.Model):
                         amount_invoiced -= invoice_line.currency_id._convert(invoice_line.price_subtotal, line.currency_id, line.company_id, invoice_date)
             line.untaxed_amount_invoiced = amount_invoiced
 
-    @api.depends('state', 'price_reduce', 'product_id', 'untaxed_amount_invoiced', 'qty_delivered')
+    @api.depends('state', 'price_reduce', 'product_id', 'untaxed_amount_invoiced', 'qty_delivered', 'product_uom_qty')
     def _compute_untaxed_amount_to_invoice(self):
         """ Total of remaining amount to invoice on the sale order line (taxes excl.) as
                 total_sol - amount already invoiced