From ac5f8da50c3364692f8d3c2d2b423a18e4800940 Mon Sep 17 00:00:00 2001
From: Lonami <totufals@hotmail.com>
Date: Tue, 10 Jul 2018 16:59:40 +0200
Subject: [PATCH] Fix update.pts may be None

---
 telethon/client/updates.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/telethon/client/updates.py b/telethon/client/updates.py
index 2b6f6a4e..32e39eac 100644
--- a/telethon/client/updates.py
+++ b/telethon/client/updates.py
@@ -188,7 +188,7 @@ class UpdateMethods(UserMethods):
                     self._loop.create_task(self._dispatch_queue_updates())
 
         need_diff = False
-        if hasattr(update, 'pts'):
+        if hasattr(update, 'pts') and update.pts is not None:
             if self._state.pts and (update.pts - self._state.pts) > 1:
                 need_diff = True
             self._state.pts = update.pts