diff --git a/DDCore/python/ddsix.py b/DDCore/python/ddsix.py
index 89b2188fd63f6f95f1c4500f476a8e6adeaabdd0..42843a84a7c70add409ca122ddec190e42b6d458 100644
--- a/DDCore/python/ddsix.py
+++ b/DDCore/python/ddsix.py
@@ -1,3 +1,4 @@
+# flake8: noqa
 # Copyright (c) 2010-2018 Benjamin Peterson
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy