diff --git a/tests/calendars/test_cfe_calendar.py b/tests/calendars/test_cfe_calendar.py
index d036d0dc..6cd967b5 100644
--- a/tests/calendars/test_cfe_calendar.py
+++ b/tests/calendars/test_cfe_calendar.py
@@ -1,7 +1,7 @@
 from unittest import TestCase
 import pandas as pd
 
-from tests.calendars.test_trading_calendar import ExchangeCalendarTestBase
+from .test_trading_calendar import ExchangeCalendarTestBase
 from zipline.utils.calendars.exchange_calendar_cfe import CFEExchangeCalendar
 
 
diff --git a/tests/calendars/test_nyse_calendar.py b/tests/calendars/test_nyse_calendar.py
index d3f1cd7f..fcaedc78 100644
--- a/tests/calendars/test_nyse_calendar.py
+++ b/tests/calendars/test_nyse_calendar.py
@@ -1,7 +1,7 @@
 from unittest import TestCase
 import pandas as pd
 
-from tests.calendars.test_trading_calendar import ExchangeCalendarTestBase
+from .test_trading_calendar import ExchangeCalendarTestBase
 from zipline.utils.calendars.exchange_calendar_nyse import NYSEExchangeCalendar