diff --git a/readthedocs/misc/v2-migration-guide.rst b/readthedocs/misc/v2-migration-guide.rst
index 774e8634..96ef3b6e 100644
--- a/readthedocs/misc/v2-migration-guide.rst
+++ b/readthedocs/misc/v2-migration-guide.rst
@@ -494,6 +494,10 @@ empty media.
 
 The ``telethon.tl.patched`` hack has been removed.
 
+The message sender no longer is the channel when no sender is provided by Telegram. Telethon used
+to patch this value for channels to be the same as the chat, but now it will be faithful to
+Telegram's value.
+
 In order to avoid breaking more code than strictly necessary, ``.raw_text`` will remain a synonym
 of ``.message``, and ``.text`` will still be the text formatted through the ``client.parse_mode``.
 However, you're encouraged to change uses of ``.raw_text`` with ``.message``, and ``.text`` with
diff --git a/telethon/types/_custom/message.py b/telethon/types/_custom/message.py
index 278bc0e7..54dde6b0 100644
--- a/telethon/types/_custom/message.py
+++ b/telethon/types/_custom/message.py
@@ -410,13 +410,6 @@ class Message(ChatGetter, SenderGetter):
         if isinstance(message, _tl.Message):
             if message.from_id is not None:
                 sender_id = utils.get_peer_id(message.from_id)
-        if sender_id is None and message.peer_id and not isinstance(message, _tl.MessageEmpty):
-            # If the message comes from a Channel, let the sender be it
-            # ...or...
-            # incoming messages in private conversations no longer have from_id
-            # (layer 119+), but the sender can only be the chat we're in.
-            if message.post or (not message.out and isinstance(message.peer_id, _tl.PeerUser)):
-                sender_id = utils.get_peer_id(message.peer_id)
 
         # Note that these calls would reset the client
         ChatGetter.__init__(self, message.peer_id, broadcast=message.post)