diff --git a/tox.ini b/tox.ini
index a21bd7f043..d2e8969830 100644
--- a/tox.ini
+++ b/tox.ini
@@ -40,6 +40,8 @@ commands = {posargs}
 
 [flake8]
 show-source = True
+# H301 and H306 are ignored on purpose.
+# The rest of the ignores are TODOs.
 ignore = F821,H301,H306,H404
 builtins = _
 exclude=.venv,.tox,dist,doc,openstack,*egg,rsdns,tools,etc,build,*.po,*.pot