diff --git a/freqtrade/commands/data_commands.py b/freqtrade/commands/data_commands.py
index 864f0710d..fdfef6316 100644
--- a/freqtrade/commands/data_commands.py
+++ b/freqtrade/commands/data_commands.py
@@ -89,7 +89,8 @@ def start_convert_data(args: Dict[str, Any], ohlcv: bool = True) -> None:
     if ohlcv:
         migrate_binance_futures_data(config)
         convert_ohlcv_format(config,
-                             convert_from=args['format_from'], convert_to=args['format_to'],
+                             convert_from=args['format_from'],
+                             convert_to=args['format_to'],
                              erase=args['erase'])
     else:
         convert_trades_format(config,
diff --git a/tests/data/test_converter.py b/tests/data/test_converter.py
index b37a2100d..da1459ef7 100644
--- a/tests/data/test_converter.py
+++ b/tests/data/test_converter.py
@@ -315,6 +315,8 @@ def test_convert_ohlcv_format(default_conf, testdatadir, tmpdir, file_base, cand
         files_new.append(file_new)
 
     default_conf['datadir'] = tmpdir1
+    default_conf['candle_types'] = [candletype]
+
     if candletype == CandleType.SPOT:
         default_conf['pairs'] = ['XRP/ETH', 'XRP/USDT', 'UNITTEST/USDT']
     else:
@@ -328,7 +330,6 @@ def test_convert_ohlcv_format(default_conf, testdatadir, tmpdir, file_base, cand
         convert_from='json',
         convert_to='jsongz',
         erase=False,
-        candle_type=candletype
     )
     for file in (files_temp + files_new):
         assert file.exists()
@@ -342,7 +343,6 @@ def test_convert_ohlcv_format(default_conf, testdatadir, tmpdir, file_base, cand
         convert_from='jsongz',
         convert_to='json',
         erase=True,
-        candle_type=candletype
     )
     for file in (files_temp):
         assert file.exists()