diff --git a/lib/site_setting_extension.rb b/lib/site_setting_extension.rb
index 89e49d9aebd..2df54da9a71 100644
--- a/lib/site_setting_extension.rb
+++ b/lib/site_setting_extension.rb
@@ -105,7 +105,7 @@ module SiteSettingExtension
         end
       end
 
-      $redis.del(SiteSettingExtension.client_settings_cache_key)
+      Rails.cache.delete(SiteSettingExtension.client_settings_cache_key)
     end
   end