diff --git a/pyrogram/client/client.py b/pyrogram/client/client.py
index e9be7a4e..a3cbd93b 100644
--- a/pyrogram/client/client.py
+++ b/pyrogram/client/client.py
@@ -615,7 +615,7 @@ class Client(Methods, BaseClient):
                 if phone is not None:
                     self.peers_by_phone[phone] = input_peer
 
-            if isinstance(entity, types.Chat):
+            if isinstance(entity, (types.Chat, types.ChatForbidden)):
                 chat_id = entity.id
                 peer_id = -chat_id
 
@@ -625,7 +625,7 @@ class Client(Methods, BaseClient):
 
                 self.peers_by_id[peer_id] = input_peer
 
-            if isinstance(entity, types.Channel):
+            if isinstance(entity, (types.Channel, types.ChannelForbidden)):
                 channel_id = entity.id
                 peer_id = int("-100" + str(channel_id))
 
@@ -634,7 +634,7 @@ class Client(Methods, BaseClient):
                 if access_hash is None:
                     continue
 
-                username = entity.username
+                username = getattr(entity, "username", None)
 
                 input_peer = types.InputPeerChannel(
                     channel_id=channel_id,