diff --git a/tox.ini b/tox.ini
index 08aa9686a..4e1864d77 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,7 +18,7 @@ downloadcache = ~/cache/pip
 
 [testenv:pep8]
 deps = pep8==1.1
-commands = pep8 --repeat --show-source --exclude=.venv,.tox,dist,doc,*egg .
+commands = python tools/hacking.py --ignore=N4 --repeat --show-source --exclude=.venv,.tox,dist,doc,*egg .
 
 [testenv:cover]
 setenv = NOSE_WITH_COVERAGE=1