diff --git a/tox.ini b/tox.ini
index 2c3cb4f80f..0f96da4569 100644
--- a/tox.ini
+++ b/tox.ini
@@ -32,7 +32,7 @@ downloadcache = ~/cache/pip
 
 [testenv:pep8]
 commands =
-  flake8
+  flake8 swift test doc setup.py
   flake8 --filename=swift* bin
 
 [testenv:venv]