diff --git a/tox.ini b/tox.ini
index 602e24b..b28d025 100644
--- a/tox.ini
+++ b/tox.ini
@@ -32,6 +32,4 @@ commands = {toxinidir}/setup-tests.sh oslo_debug_helper {posargs}
 
 [flake8]
 show-source = True
-ignore =
-builtins = _
-exclude=.venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,build
+exclude=.venv,.git,.tox,dist,doc,*egg,build