diff --git a/telethon/utils.py b/telethon/utils.py
index 18723dc7..e9c1468d 100644
--- a/telethon/utils.py
+++ b/telethon/utils.py
@@ -102,7 +102,7 @@ def get_display_name(entity):
         else:
             return ''
 
-    elif isinstance(entity, (types.Chat, types.Channel)):
+    elif isinstance(entity, (types.Chat, types.ChatForbidden, types.Channel)):
         return entity.title
 
     return ''