diff --git a/TelegramBots.wiki/abilities/Advanced.md b/TelegramBots.wiki/abilities/Advanced.md
index 49cd2016..6d98b691 100644
--- a/TelegramBots.wiki/abilities/Advanced.md
+++ b/TelegramBots.wiki/abilities/Advanced.md
@@ -29,7 +29,7 @@ As an example, if you want to restrict the updates to photos only, then you may
 ```java
   @Override
   public boolean checkGlobalFlags(Update update) {
-    return Flag.PHOTO;
+    return Flag.PHOTO.test(update);
   }
 ```