diff --git a/freqtrade/optimize/backtesting.py b/freqtrade/optimize/backtesting.py
index ef69539db..a0aee78b1 100644
--- a/freqtrade/optimize/backtesting.py
+++ b/freqtrade/optimize/backtesting.py
@@ -220,7 +220,7 @@ class Backtesting(object):
 
             timerange = Arguments.parse_timerange(None if self.config.get(
                 'timerange') is None else str(self.config.get('timerange')))
-            data = optimize.load_data(  # type: ignore
+            data = optimize.load_data(  # type: ignore # timerange will be refactored
                 self.config['datadir'],
                 pairs=pairs,
                 ticker_interval=self.ticker_interval,