diff --git a/util/saas/analytics.py b/util/saas/analytics.py
index bf428c348..5e4f5debf 100644
--- a/util/saas/analytics.py
+++ b/util/saas/analytics.py
@@ -37,7 +37,7 @@ class SendToMixpanel(Thread):
         logger.exception('Failed to send Mixpanel request.')
 
 
-class FakeMixpanel(object):
+class _FakeMixpanel(object):
   def track(*args, **kwargs):
     pass
 
@@ -55,15 +55,14 @@ class Analytics(object):
 
     if analytics_type == 'Mixpanel':
       mixpanel_key = app.config.get('MIXPANEL_KEY', '')
-      logger.debug('Initializing mixpanel with key: %s' %
-                   app.config['MIXPANEL_KEY'])
+      logger.debug('Initializing mixpanel with key: %s', app.config['MIXPANEL_KEY'])
 
       request_queue = Queue()
       analytics = Mixpanel(mixpanel_key, MixpanelQueuingConsumer(request_queue))
       SendToMixpanel(request_queue).start()
 
     else:
-      analytics = FakeMixpanel()
+      analytics = _FakeMixpanel()
 
     # register extension with app
     app.extensions = getattr(app, 'extensions', {})