diff --git a/freqtrade/data/history/history_utils.py b/freqtrade/data/history/history_utils.py
index dc3c7c1e6..2833a6d50 100644
--- a/freqtrade/data/history/history_utils.py
+++ b/freqtrade/data/history/history_utils.py
@@ -7,7 +7,7 @@ from typing import Dict, List, Optional, Tuple
 from pandas import DataFrame, concat
 
 from freqtrade.configuration import TimeRange
-from freqtrade.constants import DEFAULT_DATAFRAME_COLUMNS
+from freqtrade.constants import DATETIME_PRINT_FORMAT, DEFAULT_DATAFRAME_COLUMNS
 from freqtrade.data.converter import (clean_ohlcv_dataframe, ohlcv_to_dataframe,
                                       trades_remove_duplicates, trades_to_ohlcv)
 from freqtrade.data.history.idatahandler import IDataHandler, get_datahandler
@@ -227,9 +227,11 @@ def _download_pair_history(pair: str, *,
                     )
 
         logger.debug("Current Start: %s",
-                     f"{data.iloc[0]['date']:DATETIME_PRINT_FORMAT}" if not data.empty else 'None')
+                     f"{data.iloc[0]['date']:{DATETIME_PRINT_FORMAT}}"
+                     if not data.empty else 'None')
         logger.debug("Current End: %s",
-                     f"{data.iloc[-1]['date']:DATETIME_PRINT_FORMAT}" if not data.empty else 'None')
+                     f"{data.iloc[-1]['date']:{DATETIME_PRINT_FORMAT}}"
+                     if not data.empty else 'None')
 
         # Default since_ms to 30 days if nothing is given
         new_data = exchange.get_historic_ohlcv(pair=pair,
@@ -252,10 +254,12 @@ def _download_pair_history(pair: str, *,
             data = clean_ohlcv_dataframe(concat([data, new_dataframe], axis=0), timeframe, pair,
                                          fill_missing=False, drop_incomplete=False)
 
-        logger.debug("New  Start: %s",
-                     f"{data.iloc[0]['date']:DATETIME_PRINT_FORMAT}" if not data.empty else 'None')
+        logger.debug("New Start: %s",
+                     f"{data.iloc[0]['date']:{DATETIME_PRINT_FORMAT}}"
+                     if not data.empty else 'None')
         logger.debug("New End: %s",
-                     f"{data.iloc[-1]['date']:DATETIME_PRINT_FORMAT}" if not data.empty else 'None')
+                     f"{data.iloc[-1]['date']:{DATETIME_PRINT_FORMAT}}"
+                     if not data.empty else 'None')
 
         data_handler.ohlcv_store(pair, timeframe, data=data, candle_type=candle_type)
         return True