diff --git a/izaac/settings.py b/izaac/settings.py
index fcb67d4..da94812 100644
--- a/izaac/settings.py
+++ b/izaac/settings.py
@@ -40,12 +40,12 @@ CORS_ALLOW_ALL_ORIGINS = True
 # ]
 
 REST_FRAMEWORK = {
-    'DEFAULT_AUTHENTICATION_CLASSES': [
+    'DEFAULT_AUTHENTICATION_CLASSES': (
         'oauth2_provider.contrib.rest_framework.OAuth2Authentication',
-    ],
-    'DEFAULT_PERMISSION_CLASSES': [
+    ),
+    'DEFAULT_PERMISSION_CLASSES': (
         'rest_framework.permissions.IsAuthenticated',
-    ],
+    )
 }
 
 OAUTH2_PROVIDER = {