diff --git a/telegram/callbackquery.py b/telegram/callbackquery.py
index c5edc632b..947d04503 100644
--- a/telegram/callbackquery.py
+++ b/telegram/callbackquery.py
@@ -90,6 +90,8 @@ class CallbackQuery(TelegramObject):
 
         self.bot = bot
 
+        self._id_attrs = ('id',)
+
     @classmethod
     def de_json(cls, data, bot):
         if not data: