From ff4bb15fefe44344da6a3df407bb09ca8908190e Mon Sep 17 00:00:00 2001
From: Bibo-Joshi <hinrich.mahler@freenet.de>
Date: Fri, 10 Jul 2020 11:10:53 +0200
Subject: [PATCH] Fix PicklePersistence.flush() with only bot_data (#2017)

---
 telegram/ext/picklepersistence.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/telegram/ext/picklepersistence.py b/telegram/ext/picklepersistence.py
index 64f4f6fc6..2c484a7db 100644
--- a/telegram/ext/picklepersistence.py
+++ b/telegram/ext/picklepersistence.py
@@ -277,7 +277,7 @@ class PicklePersistence(BasePersistence):
         """ Will save all data in memory to pickle file(s).
         """
         if self.single_file:
-            if self.user_data or self.chat_data or self.conversations:
+            if self.user_data or self.chat_data or self.bot_data or self.conversations:
                 self.dump_singlefile()
         else:
             if self.user_data: