diff --git a/tox.ini b/tox.ini
index dc8fb85c..3a05e8cc 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,4 +1,4 @@
 [pycodestyle]
 max-line-length = 99
-ignore = E121,E123,E126,E226,E24,E704,W503,W504
+ignore = E121,E123,E126,E226,E24,E704,W503,W504,E501
 exclude = metarig.py