diff --git a/tox.ini b/tox.ini
index 1937445..b1c3ce5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
 envlist =
-    {py27,34,35}-django-{18,19,110}
-    {py27,py35}-flake8
+    py{27,34,35}-django-{18,19,110}
+    py{27,35}-flake8
     isort
 
 [testenv]