diff --git a/client/api/client_data/Chat.ts b/client/api/client_data/Chat.ts
index c767486..88e38cf 100644
--- a/client/api/client_data/Chat.ts
+++ b/client/api/client_data/Chat.ts
@@ -1,10 +1,10 @@
+import ChatType from "./ChatType.ts"
+
 export default class Chat {
-    declare type: "paivate" | "group"
+    declare type: ChatType
     declare id: string
     declare title: string
-    declare avatar_file_hash?: string
-    declare user_a_id?: string
-    declare user_b_id?: string
+    declare avatar?: string
 
     [key: string]: unknown
 }
diff --git a/client/api/client_data/ChatType.ts b/client/api/client_data/ChatType.ts
new file mode 100644
index 0000000..0ac05ed
--- /dev/null
+++ b/client/api/client_data/ChatType.ts
@@ -0,0 +1,3 @@
+type ChatType = 'private' | 'group'
+
+export default ChatType