diff --git a/tox.ini b/tox.ini
index a4bf484..8cf39ce 100644
--- a/tox.ini
+++ b/tox.ini
@@ -39,6 +39,6 @@ passenv = CI TRAVIS TRAVIS_*
 deps =
     -r requirements.txt
 setenv =
-    DJANGO_SETTINGS_MODULE=tests.settings
+    PYTHONPATH = {toxinidir}
 commands =
-    django-admin makemigrations --check --pythonpath $pwd
+    django-admin makemigrations --check --settings tests.settings