diff --git a/tests/unit_tests/config_test.py b/tests/unit_tests/config_test.py
index d28c3ecf74d77..a69d9eaede25c 100644
--- a/tests/unit_tests/config_test.py
+++ b/tests/unit_tests/config_test.py
@@ -211,7 +211,6 @@ def test_python_date_format_by_column_name(
         "dttm_columns": {
             "id": {"python_date_format": "epoch_ms"},
             "dttm": {"python_date_format": "epoch_s"},
-            "duration_ms": {"python_date_format": "invalid"},
         },
     }
     mocker.patch(
@@ -228,7 +227,6 @@ def test_python_date_format_by_column_name(
         return_value=[
             {"column_name": "id", "type": "INTEGER", "is_dttm": False},
             {"column_name": "dttm", "type": "INTEGER", "is_dttm": False},
-            {"column_name": "duration_ms", "type": "INTEGER", "is_dttm": False},
         ],
     )
 
@@ -242,12 +240,6 @@ def test_python_date_format_by_column_name(
     assert dttm_col.is_dttm
     assert dttm_col.python_date_format == "epoch_s"
 
-    duration_ms_col = [c for c in test_table.columns if c.column_name == "duration_ms"][
-        0
-    ]
-    assert duration_ms_col.is_dttm
-    assert duration_ms_col.python_date_format == "invalid"
-
 
 def test_expression_by_column_name(
     mocker: MockerFixture,