diff --git a/telethon/events/chataction.py b/telethon/events/chataction.py
index 339472a2..9f65a920 100644
--- a/telethon/events/chataction.py
+++ b/telethon/events/chataction.py
@@ -83,7 +83,7 @@ class ChatAction(EventBuilder):
         Represents the event of a new chat action.
 
         Members:
-            action_message  (:tl:`MessageAction`):
+            action_message  (`MessageAction <https://lonamiwebs.github.io/Telethon/types/message_action.html>`_):
                 The message invoked by this Chat Action.
 
             new_pin (`bool`):