diff --git a/pyrogram/file_id.py b/pyrogram/file_id.py
index 0fa5e3d0..8bc6d5f9 100644
--- a/pyrogram/file_id.py
+++ b/pyrogram/file_id.py
@@ -335,8 +335,8 @@ class FileId:
             )
 
     def encode(self, *, major: int = None, minor: int = None):
-        major = major if major is not None else self.MAJOR
-        minor = minor if minor is not None else self.MINOR
+        major = major if major is not None else self.major
+        minor = minor if minor is not None else self.minor
 
         buffer = BytesIO()