diff --git a/tox.ini b/tox.ini
index d8526fde..4a4846b8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,5 @@
 [tox]
 envlist = py26-django-14, py27-django-14, {py26,py27,py32,py33,py34,pypy}-django-{15,16,17,master}
-whitelist_externals = which
 
 [testenv]
 basepython =
@@ -23,5 +22,5 @@ deps =
     django-master: https://github.com/django/django/archive/master.zip
 usedevelop = true
 commands =
-    coverage run `which django-admin.py` test --settings=tests.settings -v2
+    coverage run {envbindir}/django-admin.py test --settings=tests.settings -v2
     coverage report