diff --git a/tox.ini b/tox.ini
index 92ce6bc..85a0d86 100644
--- a/tox.ini
+++ b/tox.ini
@@ -19,4 +19,4 @@
            python -m tools/tempest_coverage -c report --html
 
 [testenv:pep8]
-commands = python tools/hacking.py --ignore=E122,E125,E126 --repeat --show-source --exclude=.venv,.tox,dist,doc,openstack,*egg .
+commands = bash tools/check_source.sh