diff --git a/pyrogram/client/types/chat.py b/pyrogram/client/types/chat.py
index fb31bee1..78853bf4 100644
--- a/pyrogram/client/types/chat.py
+++ b/pyrogram/client/types/chat.py
@@ -1,3 +1,6 @@
+from . import Message, ChatPhoto
+
+
 class Chat:
     def __init__(self,
                  id: int,
@@ -7,10 +10,22 @@ class Chat:
                  first_name: str = None,
                  last_name: str = None,
                  all_members_are_administrators: bool = None,
-                 photo=None,
+                 photo: ChatPhoto = None,
                  description: str = None,
                  invite_link: str = None,
-                 pinned_message=None,
+                 pinned_message: Message = None,
                  sticker_set_name: str = None,
-                 can_set_sticker_set=None):
-        ...
+                 can_set_sticker_set: bool = None):
+        self.id = id
+        self.type = type
+        self.title = title
+        self.username = username
+        self.first_name = first_name
+        self.last_name = last_name
+        self.all_members_are_administrators = all_members_are_administrators
+        self.photo = photo
+        self.description = description
+        self.invite_link = invite_link
+        self.pinned_message = pinned_message
+        self.sticker_set_name = sticker_set_name
+        self.can_set_sticker_set = can_set_sticker_set