diff --git a/tox.ini b/tox.ini
index c755e6dc..0d03d172 100644
--- a/tox.ini
+++ b/tox.ini
@@ -47,7 +47,6 @@ downloadcache = ~/cache/pip
 [flake8]
 ignore = E126,H703
 show-source = true
-builtins = _
 exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,tools,build,setup.py
 
 [hacking]