diff --git a/config.py b/config.py
index 8f9c115..8fd0b4e 100644
--- a/config.py
+++ b/config.py
@@ -8,7 +8,7 @@
 class Config:
     VERSION = VERSION
 
-    SECRET_KEY = os.environ.get('SECRET_KEY', '')
+    SECRET_KEY = os.environ.get('SECRET_KEY', None)
 
     API_URL = 'https://signals.api.auth0.com/'
     UI_URL = 'https://auth0.com/signals/ip/{value}-report'