diff --git a/configurations/classic_60_40.py b/lumibot/example_strategies/classic_60_40_config.py
similarity index 100%
rename from configurations/classic_60_40.py
rename to lumibot/example_strategies/classic_60_40_config.py
diff --git a/lumibot/strategies/_strategy.py b/lumibot/strategies/_strategy.py
index 1c21d146c..f707f5497 100644
--- a/lumibot/strategies/_strategy.py
+++ b/lumibot/strategies/_strategy.py
@@ -906,8 +906,8 @@ def tearsheet(
     def run_backtest(
         self,
         datasource_class,
-        backtesting_start,
-        backtesting_end,
+        backtesting_start: datetime,
+        backtesting_end: datetime,
         minutes_before_closing=5,
         minutes_before_opening=60,
         sleeptime=1,
diff --git a/tests/test_configs_helper.py b/tests/test_configs_helper.py
index de5a3c9ec..060af7648 100644
--- a/tests/test_configs_helper.py
+++ b/tests/test_configs_helper.py
@@ -8,8 +8,8 @@ class TestConfigsHelper:
     def test_get_classic_60_40_config(self):
         """Test getting the classic 60/40 configuration"""
 
-        configs_helper = ConfigsHelper()
-        config = configs_helper.load_config("classic_60_40")
+        configs_helper = ConfigsHelper(configs_folder="example_strategies")
+        config = configs_helper.load_config("classic_60_40_config")
         assert config is not None
 
         assert config["market"] == "NYSE"