diff --git a/telethon/events/__init__.py b/telethon/events/__init__.py
index b0f21930..59d15821 100644
--- a/telethon/events/__init__.py
+++ b/telethon/events/__init__.py
@@ -876,7 +876,7 @@ class ChatAction(_EventBuilder):
                 except (TypeError, ValueError):
                     missing = []
 
-                self._user_peers = have + missing
+                self._users = have + missing
 
             return self._users