diff --git a/tox.ini b/tox.ini
index cac92ed0cb5..d2b6ef2ffbb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,7 +2,7 @@
 envlist = py26,py27,py33,pep8
 
 [testenv]
-sitepackages = True
+sitepackages = False
 setenv = VIRTUAL_ENV={envdir}
          LANG=en_US.UTF-8
          LANGUAGE=en_US:en