diff --git a/note_kfet/settings/base.py b/note_kfet/settings/base.py
index 168f34bd..4e5fef05 100644
--- a/note_kfet/settings/base.py
+++ b/note_kfet/settings/base.py
@@ -264,11 +264,9 @@ OAUTH2_PROVIDER = {
     'SCOPES_BACKEND_CLASS': 'permission.scopes.PermissionScopes',
     'OAUTH2_VALIDATOR_CLASS': "permission.scopes.PermissionOAuth2Validator",
     'REFRESH_TOKEN_EXPIRE_SECONDS': timedelta(days=14),
+    'PKCE_REQUIRED': False, # PKCE (fix a breaking change of django-oauth-toolkit 2.0.0)
 }
 
-# PKCE (fix a breaking change of django-oauth-toolkit 2.0.0)
-PKCE_REQUIRED = False
-
 # Take control on how widget templates are sourced
 # See https://docs.djangoproject.com/en/2.2/ref/forms/renderers/#templatessetting
 FORM_RENDERER = 'django.forms.renderers.TemplatesSetting'