diff --git a/lib/oauth2_basic_authenticator.rb b/lib/oauth2_basic_authenticator.rb
index 0b77def..6c45437 100644
--- a/lib/oauth2_basic_authenticator.rb
+++ b/lib/oauth2_basic_authenticator.rb
@@ -19,7 +19,7 @@ class OAuth2BasicAuthenticator < Auth::ManagedAuthenticator
                       setup:
                         lambda { |env|
                           opts = env["omniauth.strategy"].options
-                          opts[:client_id] = SiteSetting.oauth2_client_id
+                          opts[:appid] = SiteSetting.oauth2_appid
                           opts[:client_secret] = SiteSetting.oauth2_client_secret
                           opts[:provider_ignores_state] = SiteSetting.oauth2_disable_csrf
                           opts[:client_options] = {