diff --git a/tailbone/views/people.py b/tailbone/views/people.py
index d288b551..405b1ca3 100644
--- a/tailbone/views/people.py
+++ b/tailbone/views/people.py
@@ -564,15 +564,19 @@ class PersonView(MasterView):
         Method which must return the base query for the profile's POS
         Transactions grid data.
         """
-        app = self.get_rattail_app()
-        customer = app.get_customer(person)
+        customer = self.app.get_customer(person)
 
-        key_field = app.get_customer_key_field()
-        customer_key = getattr(customer, key_field)
-        if customer_key is not None:
-            customer_key = str(customer_key)
+        if customer:
+            key_field = self.app.get_customer_key_field()
+            customer_key = getattr(customer, key_field)
+            if customer_key is not None:
+                customer_key = str(customer_key)
+        else:
+            # nb. this should *not* match anything, so query returns
+            # no results..
+            customer_key = person.uuid
 
-        trainwreck = app.get_trainwreck_handler()
+        trainwreck = self.app.get_trainwreck_handler()
         model = trainwreck.get_model()
         query = TrainwreckSession.query(model.Transaction)\
                                  .filter(model.Transaction.customer_id == customer_key)