diff --git a/tox.ini b/tox.ini
index a807df1..ecb0f09 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,6 +14,9 @@ commands = {posargs}
 deps = pyflakes
 commands = pyflakes setup.py reviewday bin
 
+[flake8]
+ignore = E722
+
 [testenv:pep8]
 whitelist_externals = bash
 commands = flake8