diff --git a/freqtrade/freqai/data_drawer.py b/freqtrade/freqai/data_drawer.py
index b9854919d..b6ded83b1 100644
--- a/freqtrade/freqai/data_drawer.py
+++ b/freqtrade/freqai/data_drawer.py
@@ -375,7 +375,7 @@ class FreqaiDataDrawer:
         num_keep = self.freqai_info["purge_old_models"]
         if not num_keep:
             return
-        elif type(num_keep) == bool:
+        elif isinstance(num_keep, bool):
             num_keep = 2
 
         model_folders = [x for x in self.full_path.iterdir() if x.is_dir()]
diff --git a/tests/strategy/test_default_strategy.py b/tests/strategy/test_default_strategy.py
index 5f41177eb..b5b07e0cd 100644
--- a/tests/strategy/test_default_strategy.py
+++ b/tests/strategy/test_default_strategy.py
@@ -25,13 +25,13 @@ def test_strategy_test_v3(dataframe_1m, fee, is_short, side):
     strategy = StrategyTestV3({})
 
     metadata = {'pair': 'ETH/BTC'}
-    assert type(strategy.minimal_roi) is dict
-    assert type(strategy.stoploss) is float
-    assert type(strategy.timeframe) is str
+    assert isinstance(strategy.minimal_roi, dict)
+    assert isinstance(strategy.stoploss, float)
+    assert isinstance(strategy.timeframe, str)
     indicators = strategy.populate_indicators(dataframe_1m, metadata)
-    assert type(indicators) is DataFrame
-    assert type(strategy.populate_buy_trend(indicators, metadata)) is DataFrame
-    assert type(strategy.populate_sell_trend(indicators, metadata)) is DataFrame
+    assert isinstance(indicators, DataFrame)
+    assert isinstance(strategy.populate_buy_trend(indicators, metadata), DataFrame)
+    assert isinstance(strategy.populate_sell_trend(indicators, metadata), DataFrame)
 
     trade = Trade(
         open_rate=19_000,
diff --git a/tests/utils/test_datetime_helpers.py b/tests/utils/test_datetime_helpers.py
index 222410027..6ce975732 100644
--- a/tests/utils/test_datetime_helpers.py
+++ b/tests/utils/test_datetime_helpers.py
@@ -63,7 +63,7 @@ def test_format_ms_time() -> None:
     # Date 2018-04-10 18:02:01
     date_in_epoch_ms = 1523383321000
     date = format_ms_time(date_in_epoch_ms)
-    assert type(date) is str
+    assert isinstance(date, str)
     res = datetime(2018, 4, 10, 18, 2, 1, tzinfo=timezone.utc)
     assert date == res.astimezone(None).strftime('%Y-%m-%dT%H:%M:%S')
     res = datetime(2017, 12, 13, 8, 2, 1, tzinfo=timezone.utc)