diff --git a/tests/settings/main.py b/tests/settings/main.py
index d646271..f066f31 100644
--- a/tests/settings/main.py
+++ b/tests/settings/main.py
@@ -38,9 +38,9 @@ class Test(Configuration):
         TEST_RUNNER = 'discover_runner.DiscoverRunner'
 
     def TEMPLATE_CONTEXT_PROCESSORS(self):
-        return Configuration.TEMPLATE_CONTEXT_PROCESSORS + (
+        return Configuration.TEMPLATE_CONTEXT_PROCESSORS + [
             'tests.settings.base.test_callback',
-        )
+        ]
 
     ATTRIBUTE_SETTING = True
 
diff --git a/tox.ini b/tox.ini
index 3d06096..d3efd31 100644
--- a/tox.ini
+++ b/tox.ini
@@ -35,7 +35,8 @@ deps =
     coverage: coverage
 
 commands =
-    python manage.py test -v2 {posargs:tests}
+    coverage run manage.py test -v2 {posargs:tests}
+    coverage report
 
 [testenv:flake8-py27]
 commands = flake8 configurations --ignore=E501,E127,E128,E124