diff --git a/tox.ini b/tox.ini
index cb13fbc..fc4dfdb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,11 +1,13 @@
 [tox]
-envlist = py26,py27
+envlist = py26,py27,pep8
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}
+
+[testenv:pep8]
 deps = pep8==1.3.1
        argparse
-commands = pep8  --show-source setup.py git-review
+commands = pep8 --repeat --show-source setup.py git-review
 
 [testenv:sdist]
 commands = python setup.py sdist {posargs}