diff --git a/account_payment_return/models/account_move.py b/account_payment_return/models/account_move.py
index 35ca7850bad8..3688ad7179f7 100644
--- a/account_payment_return/models/account_move.py
+++ b/account_payment_return/models/account_move.py
@@ -12,6 +12,7 @@ class AccountMove(models.Model):
     returned_payment = fields.Boolean(
         string="Payment returned",
         help="Invoice has been included on a payment that has been returned later.",
+        copy=False,
     )
 
     def check_payment_return(self):
diff --git a/account_payment_return/models/payment_return.py b/account_payment_return/models/payment_return.py
index e819ae785ec9..2c7b56d4de81 100644
--- a/account_payment_return/models/payment_return.py
+++ b/account_payment_return/models/payment_return.py
@@ -50,6 +50,7 @@ class PaymentReturn(models.Model):
         comodel_name="account.move",
         string="Reference to the created journal entry",
         states={"done": [("readonly", True)], "cancelled": [("readonly", True)]},
+        copy=False,
     )
     total_amount = fields.Float(
         compute="_compute_total_amount",