diff --git a/docs/checkout_and_payment.rst b/docs/checkout_and_payment.rst
index 30dcd44..c574729 100644
--- a/docs/checkout_and_payment.rst
+++ b/docs/checkout_and_payment.rst
@@ -13,7 +13,15 @@ which accepts a list of dotted paths to :class:`salesman.checkout.payment.Paymen
 
 .. raw:: html
 
-    <h3>1. Create payment method</h3>
+    <h3>1. Create swappable order model</h3>
+
+It is recommended to configure and setup all Salesman models as swappable even if it's not necessary at the beginning. This will future-proof your application in case you wish to add it later. This has to be done before the initial migrations are created. See :ref:`swappable_models`.
+
+.. literalinclude:: /../example/shop/models/order.py
+
+.. raw:: html
+
+    <h3>2. Create payment method</h3>
 
 First create your custom payment method. Payment methods are required to specify a ``label`` and
 a unique ``identifier`` property on class. To enable payment for the basket you should also
@@ -23,7 +31,7 @@ override the :meth:`salesman.checkout.payment.PaymentMethod.basket_payment` meth
 
 .. raw:: html
 
-    <h3>2. Register payment method</h3>
+    <h3>3. Register payment method</h3>
 
 Then register your payment method in ``settings.py``: