diff --git a/tests/unit_tests/cad/test_cad.py b/tests/unit_tests/cad/test_cad.py
index 4eb44aac2..4ae75ff76 100644
--- a/tests/unit_tests/cad/test_cad.py
+++ b/tests/unit_tests/cad/test_cad.py
@@ -1,6 +1,7 @@
 from tests.testing_harness import CADTestHarness
-
+import os
 import pytest
+
 pytestmark = pytest.mark.skipif(
     os.environ.get('CAD') != 'y',
     reason="CAD build is not enabled.")