diff --git a/tests/pipeline/test_factor.py b/tests/pipeline/test_factor.py
index 200ed15f..9e480b63 100644
--- a/tests/pipeline/test_factor.py
+++ b/tests/pipeline/test_factor.py
@@ -26,7 +26,6 @@ from zipline.utils.test_utils import check_allclose, check_arrays
 from zipline.utils.numpy_utils import (
     datetime64ns_dtype,
     float64_dtype,
-    NaTD,
     NaTns,
 )