diff --git a/ytdlbot/database.py b/ytdlbot/database.py
index f836987c..b622ca7f 100644
--- a/ytdlbot/database.py
+++ b/ytdlbot/database.py
@@ -258,7 +258,7 @@ def __init__(self):
             self.con = pymysql.connect(
                 host=MYSQL_HOST, user=MYSQL_USER, passwd=MYSQL_PASS, db="ytdl", charset="utf8mb4"
             )
-            self.con.ping(reconnect = True)
+            self.con.ping(reconnect=True)
         except Exception:
             logging.warning("MySQL connection failed, using fake mysql instead.")
             self.con = FakeMySQL()
diff --git a/ytdlbot/ytdl_bot.py b/ytdlbot/ytdl_bot.py
index 6d0491c4..40f38177 100644
--- a/ytdlbot/ytdl_bot.py
+++ b/ytdlbot/ytdl_bot.py
@@ -583,7 +583,7 @@ def track_memory():
     MySQL()
     tr = tracker.SummaryTracker()
     TRX_SIGNAL.connect(trx_notify)
-    scheduler = BackgroundScheduler(timezone="Europe/London", job_defaults={"max_instances": 6})
+    scheduler = BackgroundScheduler(timezone="Europe/London")
     scheduler.add_job(auto_restart, "interval", seconds=600)
     scheduler.add_job(clean_tempfile, "interval", seconds=120)
     if not IS_BACKUP_BOT: