diff --git a/tox.ini b/tox.ini
index 358d1811..11c70885 100644
--- a/tox.ini
+++ b/tox.ini
@@ -15,8 +15,8 @@ deps =
 #commands = python setup.py test --slowest --testr-args="{posargs}"
 
 [testenv:pep8]
-#commands =
-#    flake8 {posargs}
+commands =
+    flake8 {posargs}
 
 [testenv:venv]
 commands = {posargs}