diff --git a/tox.ini b/tox.ini
index b87cd2b..1eacc4d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -30,7 +30,7 @@
     PYTHONPATH = {toxinidir}
     POSTORIUS_VCR_RECORD_MODE = all
 commands =
-    example_project/manage.py test {posargs:postorius}
+    python example_project/manage.py test {posargs:postorius}
 
 
 # These are used for local development and expect mailman.client to be