diff --git a/ext/3rd-party-addons/global_discount/models/invoice.py b/ext/3rd-party-addons/global_discount/models/invoice.py
index 88f3654a..07c7a11f 100755
--- a/ext/3rd-party-addons/global_discount/models/invoice.py
+++ b/ext/3rd-party-addons/global_discount/models/invoice.py
@@ -59,4 +59,7 @@ class Invoice(models.Model):
                 'invoice_line_tax_ids': [(6, 0, taxes_ids)],
                 'sequence': 100,
             })
+
+        super()._onchange_invoice_line_ids()
+
         return True
diff --git a/ext/custom-addons/tz_dealer_discount/models/invoice.py b/ext/custom-addons/tz_dealer_discount/models/invoice.py
index 60b2cc47..1a858bce 100644
--- a/ext/custom-addons/tz_dealer_discount/models/invoice.py
+++ b/ext/custom-addons/tz_dealer_discount/models/invoice.py
@@ -91,4 +91,7 @@ class Invoice(models.Model):
                     'layout_category_id':layout_category_id.id,
                     'sequence': 99999,
                 })
+
+        super()._onchange_invoice_line_ids()
+
         return True