diff --git a/unittests/test_cfg_checker.py b/unittests/test_cfg_checker.py
index b3d9614..29f6aed 100644
--- a/unittests/test_cfg_checker.py
+++ b/unittests/test_cfg_checker.py
@@ -14,7 +14,7 @@
 
 import os
 import unittest
-from spinn_utilities.config_holder import run_config_checks
+from spinn_utilities.configs.config_checker import ConfigChecker
 from spynnaker.pyNN.config_setup import unittest_setup
 
 
@@ -28,5 +28,5 @@ def test_config_checks(self):
         parent = os.path.dirname(unittests)
         examples = os.path.join(parent, "examples")
         integration_tests = os.path.join(parent, "integration_tests")
-        run_config_checks(directories=[
-            examples, integration_tests, unittests], check_all_used=False)
+        checker = ConfigChecker([examples, integration_tests, unittests])
+        checker.check(local_defaults=False)