diff --git a/stock.py b/stock.py
index 9f33038980..7ad63abfd5 100644
--- a/stock.py
+++ b/stock.py
@@ -272,7 +272,7 @@ class CreateShippingUPS(Wizard):
                 'AddressLine': [l[:35]
                     for l in (address.street or '').splitlines()[:3]],
                 'City': address.city[:30],
-                'PostalCode': (address.zip or '').replace(' ', '')[:9],
+                'PostalCode': (address.postal_code or '').replace(' ', '')[:9],
                 'CountryCode': address.country.code if address.country else '',
                 },
             }
diff --git a/tests/scenario_shipping_ups.rst b/tests/scenario_shipping_ups.rst
index 70bd3a851d..d109c7a02a 100644
--- a/tests/scenario_shipping_ups.rst
+++ b/tests/scenario_shipping_ups.rst
@@ -59,7 +59,7 @@ Create parties::
     >>> customer.save()
     >>> customer_address = customer.addresses.new()
     >>> customer_address.street = 'Anfield Road'
-    >>> customer_address.zip = 'L 40TH'
+    >>> customer_address.postal_code = 'L 40TH'
     >>> customer_address.city = 'Liverpool'
     >>> customer_address.country = britain
     >>> customer_address.save()
@@ -76,7 +76,7 @@ Set the warehouse address::
     >>> company_address = Address()
     >>> company_address.party = company.party
     >>> company_address.street = '2 rue de la Centrale'
-    >>> company_address.zip = '4000'
+    >>> company_address.postal_code = '4000'
     >>> company_address.city = 'Sclessin'
     >>> company_address.country = belgium
     >>> company_address.save()