diff --git a/telethon/tl/custom/dialog.py b/telethon/tl/custom/dialog.py
index fd2becdc..c761141f 100644
--- a/telethon/tl/custom/dialog.py
+++ b/telethon/tl/custom/dialog.py
@@ -79,7 +79,7 @@ class Dialog:
         self.unread_count = dialog.unread_count
         self.unread_mentions_count = dialog.unread_mentions_count
 
-        self.draft = Draft._from_dialog(client, dialog)
+        self.draft = Draft._from_dialog(client, self)
 
         self.is_user = isinstance(self.entity, types.User)
         self.is_group = (