diff --git a/kallithea/lib/auth_modules/auth_container.py b/kallithea/lib/auth_modules/auth_container.py
--- a/kallithea/lib/auth_modules/auth_container.py
+++ b/kallithea/lib/auth_modules/auth_container.py
@@ -30,7 +30,7 @@ import logging
 from kallithea.lib import auth_modules
 from kallithea.lib.compat import hybrid_property
 from kallithea.lib.utils2 import asbool
-from kallithea.model.db import Setting
+from kallithea.model import db
 
 
 log = logging.getLogger(__name__)
@@ -212,10 +212,10 @@ class KallitheaAuthPlugin(auth_modules.K
 
     def get_managed_fields(self):
         fields = ['username', 'password']
-        if(Setting.get_by_name('auth_container_email_header').app_settings_value):
+        if(db.Setting.get_by_name('auth_container_email_header').app_settings_value):
             fields.append('email')
-        if(Setting.get_by_name('auth_container_firstname_header').app_settings_value):
+        if(db.Setting.get_by_name('auth_container_firstname_header').app_settings_value):
             fields.append('firstname')
-        if(Setting.get_by_name('auth_container_lastname_header').app_settings_value):
+        if(db.Setting.get_by_name('auth_container_lastname_header').app_settings_value):
             fields.append('lastname')
         return fields