diff --git a/pandas/tests/series/test_asof.py b/pandas/tests/series/test_asof.py
index 3104d85601434..e85a0ac42ae1a 100644
--- a/pandas/tests/series/test_asof.py
+++ b/pandas/tests/series/test_asof.py
@@ -8,10 +8,8 @@
 
 import pandas.util.testing as tm
 
-from .common import TestData
 
-
-class TestSeriesAsof(TestData):
+class TestSeriesAsof():
 
     def test_basic(self):