diff --git a/addons/stock_account/models/product.py b/addons/stock_account/models/product.py
index 63412a40136..2694989372b 100644
--- a/addons/stock_account/models/product.py
+++ b/addons/stock_account/models/product.py
@@ -203,7 +203,7 @@ class ProductProduct(models.Model):
         fifo_vals = self._run_fifo(abs(quantity), company)
         vals['remaining_qty'] = fifo_vals.get('remaining_qty')
         # In case of AVCO, fix rounding issue of standard price when needed.
-        if self.cost_method == 'average':
+        if self.product_tmpl_id.cost_method == 'average':
             rounding_error = currency.round(self.standard_price * self.quantity_svl - self.value_svl)
             if rounding_error:
                 # If it is bigger than the (smallest number of the currency * quantity) / 2,
@@ -215,7 +215,7 @@ class ProductProduct(models.Model):
                         float_repr(rounding_error, precision_digits=currency.decimal_places),
                         currency.symbol
                     )
-        if self.cost_method == 'fifo':
+        if self.product_tmpl_id.cost_method == 'fifo':
             vals.update(fifo_vals)
         return vals