diff --git a/freqtrade/commands/data_commands.py b/freqtrade/commands/data_commands.py
index aeb598009..ddc2ca25b 100644
--- a/freqtrade/commands/data_commands.py
+++ b/freqtrade/commands/data_commands.py
@@ -1,6 +1,6 @@
 import logging
 import sys
-from typing import Any, Dict, List, cast
+from typing import Any, Dict, List
 
 import arrow
 
@@ -43,18 +43,18 @@ def start_download_data(args: Dict[str, Any]) -> None:
         if config.get('download_trades'):
             pairs_not_available = refresh_backtest_trades_data(
                 exchange, pairs=config["pairs"], datadir=config['datadir'],
-                timerange=timerange, erase=cast(bool, config.get("erase")))
+                timerange=timerange, erase=bool(config.get("erase")))
 
             # Convert downloaded trade data to different timeframes
             convert_trades_to_ohlcv(
                 pairs=config["pairs"], timeframes=config["timeframes"],
                 datadir=config['datadir'], timerange=timerange,
-                erase=cast(bool, config.get("erase")))
+                erase=bool(config.get("erase")))
         else:
             pairs_not_available = refresh_backtest_ohlcv_data(
                 exchange, pairs=config["pairs"], timeframes=config["timeframes"],
                 datadir=config['datadir'], timerange=timerange,
-                erase=cast(bool, config.get("erase")))
+                erase=bool(config.get("erase")))
 
     except KeyboardInterrupt:
         sys.exit("SIGINT received, aborting ...")