diff --git a/pinaxcon/settings.py b/pinaxcon/settings.py
index 45863ffe00bd4d969498be46f2ea9b9761556adc..bffc833298989297969dcced804cee60c0bd7614 100644
--- a/pinaxcon/settings.py
+++ b/pinaxcon/settings.py
@@ -238,11 +238,17 @@ ATTENDEE_PROFILE_MODEL = "pinaxcon.registrasion.models.AttendeeProfile"
 # You only need to provide this if you're customising the form from the default
 # ATTENDEE_PROFILE_FORM = "pinaxcon.registrasion.forms.ProfileForm"
 
+# Ticket product category -- used to identify which products must be available
+# in order to register.
+TICKET_PRODUCT_CATEGORY = 1
+
+
 INVOICE_CURRENCY = "AUD"
 
 # Use nose to run all tests
 TEST_RUNNER = 'django_nose.NoseTestSuiteRunner'
 
+
 # Tell nose to measure coverage on the 'foo' and 'bar' apps
 NOSE_ARGS = [
     '--with-coverage',