diff --git a/tests/test_black.py b/tests/test_black.py
index b8af711..84b7a61 100644
--- a/tests/test_black.py
+++ b/tests/test_black.py
@@ -1164,4 +1164,4 @@ def test_assert_equivalent_different_asts(self) -> None:
 
 
 if __name__ == "__main__":
-    unittest.main()
+    unittest.main(module="test_black")