diff --git a/seahub/settings.py b/seahub/settings.py
index 60ed588c26..76830866cf 100644
--- a/seahub/settings.py
+++ b/seahub/settings.py
@@ -213,7 +213,7 @@ INSTALLED_APPS = (
 )
 
 # Enabled or disable constance(web settings).
-CONSTANCE_ENABLED = True
+ENABLE_SETTINGS_VIA_WEB = True
 CONSTANCE_BACKEND = 'constance.backends.database.DatabaseBackend'
 CONSTANCE_DATABASE_CACHE_BACKEND = 'default'
 
@@ -624,8 +624,10 @@ if 'win32' in sys.platform:
     fp.write("%d\n" % os.getpid())
     fp.close()
 
+# Following settings are private, can not be overwrite.
 INNER_FILE_SERVER_ROOT = 'http://127.0.0.1:' + FILE_SERVER_PORT
 
+CONSTANCE_ENABLED = ENABLE_SETTINGS_VIA_WEB
 CONSTANCE_CONFIG = {
     'SERVICE_URL': (SERVICE_URL,''),
     'FILE_SERVER_ROOT': (FILE_SERVER_ROOT,''),
diff --git a/seahub/views/sysadmin.py b/seahub/views/sysadmin.py
index b63175d515..d9004558d7 100644
--- a/seahub/views/sysadmin.py
+++ b/seahub/views/sysadmin.py
@@ -2182,7 +2182,7 @@ def sys_sudo_mode(request):
 def sys_settings(request):
     """List and change seahub settings in admin panel.
     """
-    if not dj_settings.CONSTANCE_ENABLED:
+    if not dj_settings.ENABLE_SETTINGS_VIA_WEB:
         raise Http404
 
     DIGIT_WEB_SETTINGS = (
diff --git a/tests/seahub/views/sysadmin/test_sys_settings.py b/tests/seahub/views/sysadmin/test_sys_settings.py
index e8be915551..1d041d8947 100644
--- a/tests/seahub/views/sysadmin/test_sys_settings.py
+++ b/tests/seahub/views/sysadmin/test_sys_settings.py
@@ -13,6 +13,6 @@ class SysSettingsTest(BaseTestCase):
         self.assertEqual(200, resp.status_code)
 
     def test_can_not_render_if_setting_disabled(self):
-        with self.settings(CONSTANCE_ENABLED=False):
+        with self.settings(ENABLE_SETTINGS_VIA_WEB=False):
             resp = self.client.get(self.url)
             self.assertEqual(404, resp.status_code)