diff --git a/tox.ini b/tox.ini
index fbfd2a6..5a4d525 100644
--- a/tox.ini
+++ b/tox.ini
@@ -28,7 +28,7 @@
 commands = oslo_debug_helper {posargs}
 
 [flake8]
-# E123, E125 skipped as they are invalid PEP-8.
+ignore = E129
 
 show-source = True
 builtins = _