diff --git a/tox.ini b/tox.ini
index a2f84e0..bf67817 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist = py26,py27,py34,pypy
 [testenv]
-# changedir = .tox
+changedir = .tox
 deps = -rrequirements-test.txt
-commands = py.test --doctest-modules boltons tests
+commands = py.test --doctest-modules {envsitepackagesdir}/boltons {toxinidir}/tests