diff --git a/runtests.py b/runtests.py
index 0653e4e..c80f305 100644
--- a/runtests.py
+++ b/runtests.py
@@ -47,6 +47,7 @@
         },
     ]
 })
+print(DATABASES)
 settings.configure(
     DEBUG=True,
     USE_TZ=True,
diff --git a/tox.ini b/tox.ini
index 0d52d00..690cb3c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,7 +5,7 @@ envlist =
   py35-dj{18,19,dev}
 
 [testenv]
--passenv=
+passenv=
   DATABASE_URL
   SHARD_001_DATABASE_URL
   SHARD_002_DATABASE_URL