diff --git a/fence/auth.py b/fence/auth.py
index 3861951f8..6f3058dd4 100644
--- a/fence/auth.py
+++ b/fence/auth.py
@@ -119,6 +119,7 @@ def set_flask_session_values(user):
             return
     else:
         if not config["ALLOW_NEW_USER_ON_LOGIN"]:
+            raise Unauthorized(config["ALLOW_NEW_USER_ON_LOGIN"])
             # do not create new active users automatically
             raise Unauthorized("New user is not yet authorized/activated in the system")