diff --git a/tox.ini b/tox.ini
index f380171659..6675babb68 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,7 +6,7 @@ platform = linux: linux
            win: win64
 
 [flake8]
-ignore = E12, W503
+ignore = E12, W503, W504
 max-line-length = 120
 show-source = True