diff --git a/tox.ini b/tox.ini
index 8a9f6c13..773f8475 100644
--- a/tox.ini
+++ b/tox.ini
@@ -79,7 +79,10 @@ commands = python setup.py build_sphinx
 # N530 direct neutron imports not allowed
 # TODO(ihrachys) -- reenable N537 when new neutron-lib release is available
 # N537 Log messages should not be translated
+# H106 Don’t put vim configuration in source files
+# H203 Use assertIs(Not)None to check for None
 ignore = E125,E126,E128,E129,E265,H404,H405,N530,N537
+enable-extensions=H106,H203
 show-source = true
 exclude = .venv,.git,.tox,dist,doc,*lib/python*,*egg,build,tools,.ropeproject,rally-scenarios
 import-order-style = pep8