diff --git a/scripts/convert_backtestdata.py b/scripts/convert_backtestdata.py
index 302170ca0..d93356cf6 100755
--- a/scripts/convert_backtestdata.py
+++ b/scripts/convert_backtestdata.py
@@ -69,7 +69,7 @@ def parse_old_backtest_data(ticker) -> DataFrame:
         .rename(columns=columns)
     if 'BV' in frame:
         frame.drop('BV', 1, inplace=True)
-    if not 'date' in frame:
+    if 'date' not in frame:
         logger.warning("Date not in frame - probably not a Ticker file")
         return None
     frame.sort_values('date', inplace=True)
@@ -136,7 +136,8 @@ def convert_main(args: Namespace) -> None:
 
             if ret_integer:
                 minutes = int(ret_integer.group(0))
-                interval = str(minutes) + 'm'  # default to adding 'm' to end of minutes for new interval name
+                # default to adding 'm' to end of minutes for new interval name
+                interval = str(minutes) + 'm'
                 # but check if there is a mapping between int and string also
                 for str_interval, minutes_interval in Constants.TICKER_INTERVAL_MINUTES.items():
                     if minutes_interval == minutes: