diff --git a/product_update_price_last_purchase/models/stock_move.py b/product_update_price_last_purchase/models/stock_move.py
index e30e522..424c563 100644
--- a/product_update_price_last_purchase/models/stock_move.py
+++ b/product_update_price_last_purchase/models/stock_move.py
@@ -33,7 +33,7 @@ class StockMove(models.Model):
             ):
                 price_updated = float_round(
                     move.purchase_line_id.price_unit
-                    * (1 - move.purchase_line_id.discount / 100),
+                    * (1 - move.purchase_line_id.discount1 / 100),
                     precision_digits=2,
                 )
             elif (
@@ -42,7 +42,7 @@ class StockMove(models.Model):
             ):
                 price_updated = float_round(
                     move.purchase_line_id.price_unit
-                    * (1 - move.purchase_line_id.discount / 100)
+                    * (1 - move.purchase_line_id.discount1 / 100)
                     * (1 - move.purchase_line_id.discount2 / 100),
                     precision_digits=2,
                 )