diff --git a/tests/calendars/test_trading_calendar.py b/tests/calendars/test_trading_calendar.py
index 94af91da..1cbb0b3a 100644
--- a/tests/calendars/test_trading_calendar.py
+++ b/tests/calendars/test_trading_calendar.py
@@ -39,8 +39,12 @@ from zipline.utils.calendars import(
     deregister_calendar,
     get_calendar,
 )
-from zipline.utils.calendars.calendar_utils import register_calendar_type, \
-    _default_calendar_factories
+from zipline.utils.calendars.calendar_utils import (
+    _default_calendar_aliases,
+    _default_calendar_factories,
+    register_calendar_type,
+
+)
 from zipline.utils.calendars.trading_calendar import days_at_time, \
     TradingCalendar
 
@@ -123,7 +127,8 @@ class CalendarRegistrationTestCase(TestCase):
 
 class DefaultsTestCase(TestCase):
     def test_default_calendars(self):
-        for name in concat(_default_calendar_factories):
+        for name in concat([_default_calendar_factories,
+                            _default_calendar_aliases]):
             self.assertIsNotNone(get_calendar(name),
                                  "get_calendar(%r) returned None" % name)
 
diff --git a/zipline/utils/calendars/calendar_utils.py b/zipline/utils/calendars/calendar_utils.py
index 2d7df563..a3175799 100644
--- a/zipline/utils/calendars/calendar_utils.py
+++ b/zipline/utils/calendars/calendar_utils.py
@@ -25,7 +25,7 @@ _default_calendar_factories = {
     'TSX': TSXExchangeCalendar,
     'us_futures': QuantopianUSFuturesCalendar,
 }
-_default_aliases = {
+_default_calendar_aliases = {
     'NASDAQ': 'NYSE',
     'BATS': 'NYSE',
     'CBOT': 'CME',
@@ -254,7 +254,7 @@ class TradingCalendarDispatcher(object):
 global_calendar_dispatcher = TradingCalendarDispatcher(
     calendars={},
     calendar_factories=_default_calendar_factories,
-    aliases=_default_aliases,
+    aliases=_default_calendar_aliases,
 )
 
 get_calendar = global_calendar_dispatcher.get_calendar