diff --git a/tests/test_continuous_futures.py b/tests/test_continuous_futures.py
index 68389afb..da6c1214 100644
--- a/tests/test_continuous_futures.py
+++ b/tests/test_continuous_futures.py
@@ -1232,8 +1232,6 @@ class OrderedContractsTestCase(WithAssetFinder,
             'start_date': pd.date_range('2015-01-01', periods=4, tz="UTC"),
             'end_date': pd.date_range('2016-01-01', periods=4, tz="UTC"),
             'notice_date': pd.date_range('2016-01-01', periods=4, tz="UTC"),
-            'expiration_date': pd.date_range(
-                '2016-01-01', periods=4, tz="UTC"),
             'expiration_date': pd.date_range(
                 '2016-01-01', periods=4, tz="UTC"),
             'auto_close_date': pd.date_range(