diff --git a/tox.ini b/tox.ini
index c301373..4eec967 100644
--- a/tox.ini
+++ b/tox.ini
@@ -53,8 +53,5 @@ commands = oslo_debug_helper {posargs}
 
 [flake8]
 show-source = True
-# E123, E125 skipped as they are invalid PEP-8.
-# H405 multi line docstring summary not separated with an empty line
-ignore = E123,E125,H405
 builtins = _
 exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build,.ropeproject,tools