diff --git a/freqtrade/optimize/optimize_reports.py b/freqtrade/optimize/optimize_reports.py
index abfbaf1d8..251da9159 100644
--- a/freqtrade/optimize/optimize_reports.py
+++ b/freqtrade/optimize/optimize_reports.py
@@ -1,7 +1,7 @@
 import logging
 from datetime import timedelta
 from pathlib import Path
-from typing import Dict, Optional
+from typing import Dict
 
 from pandas import DataFrame
 from tabulate import tabulate
diff --git a/tests/optimize/test_optimize_reports.py b/tests/optimize/test_optimize_reports.py
index 36c9a93b3..f19668459 100644
--- a/tests/optimize/test_optimize_reports.py
+++ b/tests/optimize/test_optimize_reports.py
@@ -130,26 +130,26 @@ def test_backtest_record(default_conf, fee, mocker):
     )
 
     results = {'DefStrat': pd.DataFrame({"pair": ["UNITTEST/BTC", "UNITTEST/BTC",
-                                               "UNITTEST/BTC", "UNITTEST/BTC"],
-                                      "profit_percent": [0.003312, 0.010801, 0.013803, 0.002780],
-                                      "profit_abs": [0.000003, 0.000011, 0.000014, 0.000003],
-                                      "open_time": [Arrow(2017, 11, 14, 19, 32, 00).datetime,
-                                                    Arrow(2017, 11, 14, 21, 36, 00).datetime,
-                                                    Arrow(2017, 11, 14, 22, 12, 00).datetime,
-                                                    Arrow(2017, 11, 14, 22, 44, 00).datetime],
-                                      "close_time": [Arrow(2017, 11, 14, 21, 35, 00).datetime,
-                                                     Arrow(2017, 11, 14, 22, 10, 00).datetime,
-                                                     Arrow(2017, 11, 14, 22, 43, 00).datetime,
-                                                     Arrow(2017, 11, 14, 22, 58, 00).datetime],
-                                      "open_rate": [0.002543, 0.003003, 0.003089, 0.003214],
-                                      "close_rate": [0.002546, 0.003014, 0.003103, 0.003217],
-                                      "open_index": [1, 119, 153, 185],
-                                      "close_index": [118, 151, 184, 199],
-                                      "trade_duration": [123, 34, 31, 14],
-                                      "open_at_end": [False, False, False, True],
-                                      "sell_reason": [SellType.ROI, SellType.STOP_LOSS,
-                                                      SellType.ROI, SellType.FORCE_SELL]
-                                      })}
+                                                  "UNITTEST/BTC", "UNITTEST/BTC"],
+                                         "profit_percent": [0.003312, 0.010801, 0.013803, 0.002780],
+                                         "profit_abs": [0.000003, 0.000011, 0.000014, 0.000003],
+                                         "open_time": [Arrow(2017, 11, 14, 19, 32, 00).datetime,
+                                                       Arrow(2017, 11, 14, 21, 36, 00).datetime,
+                                                       Arrow(2017, 11, 14, 22, 12, 00).datetime,
+                                                       Arrow(2017, 11, 14, 22, 44, 00).datetime],
+                                         "close_time": [Arrow(2017, 11, 14, 21, 35, 00).datetime,
+                                                        Arrow(2017, 11, 14, 22, 10, 00).datetime,
+                                                        Arrow(2017, 11, 14, 22, 43, 00).datetime,
+                                                        Arrow(2017, 11, 14, 22, 58, 00).datetime],
+                                         "open_rate": [0.002543, 0.003003, 0.003089, 0.003214],
+                                         "close_rate": [0.002546, 0.003014, 0.003103, 0.003217],
+                                         "open_index": [1, 119, 153, 185],
+                                         "close_index": [118, 151, 184, 199],
+                                         "trade_duration": [123, 34, 31, 14],
+                                         "open_at_end": [False, False, False, True],
+                                         "sell_reason": [SellType.ROI, SellType.STOP_LOSS,
+                                                         SellType.ROI, SellType.FORCE_SELL]
+                                         })}
     store_backtest_result(Path("backtest-result.json"), results)
     # Assert file_dump_json was only called once
     assert names == [Path('backtest-result.json')]