diff --git a/setup.cfg b/setup.cfg
index e5d685a532f2f0995a360dd19cd99de521339bba..57e1fcb2e7645e04977f868f1c2f9f17d85f7540 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -129,7 +129,8 @@ exclude =
     .eggs
     docs/conf.py
 max-line-length=120
-ignore = W293 W503 W291 W504
+ignore = W293 W503 W291 W504 C901
+
 
 [pyscaffold]
 # PyScaffold's parameters when the project was created.