diff --git a/tox.ini b/tox.ini
index ecd4f24..41eece1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -114,11 +114,11 @@
 [testenv:pep8]
 commands =
    flake8 {posargs}
-   python tools/check_uuid.py
+   check-uuid
 
 [testenv:uuidgen]
 commands =
-   python tools/check_uuid.py --fix
+   check-uuid --fix
 
 [hacking]
 local-check-factory = tempest.hacking.checks.factory