diff --git a/tools/run_pep8.sh b/tools/run_pep8.sh
index 4c0f789f1b..fa7978a534 100755
--- a/tools/run_pep8.sh
+++ b/tools/run_pep8.sh
@@ -8,10 +8,9 @@ echo "Running flake8 ..."
 # E125 continuation line does not distinguish itself from next logical line
 # H301 one import per line
 # H302 import only modules
-# TODO(marun) H404 multi line docstring should start with a summary
 # TODO(marun) H901,902 use the not operator inline for clarity
 # TODO(markmcclain) H202 assertRaises Exception too broad
-PEP8_IGNORE="E711,E712,E125,H301,H302,H404,H901,H902,H202"
+PEP8_IGNORE="E711,E712,E125,H301,H302,H901,H902,H202"
 PEP8_BUILTINS="_"
 PEP8_EXCLUDE=".venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,tools"
 flake8 --exclude=$PEP8_EXCLUDE --ignore=$PEP8_IGNORE --show-source --builtins=$PEP8_BUILTINS .