diff --git a/telethon/telegram_client.py b/telethon/telegram_client.py
index 4cc3de08..ffc18655 100644
--- a/telethon/telegram_client.py
+++ b/telethon/telegram_client.py
@@ -2436,7 +2436,7 @@ class TelegramClient(TelegramBareClient):
 
     def catch_up(self):
         state = self.session.get_update_state(0)
-        if not state:
+        if not state or not state.pts:
             return
 
         self.session.catching_up = True