diff --git a/freqtrade/data/btanalysis.py b/freqtrade/data/btanalysis.py
index 36d8aedbb..992100cbd 100644
--- a/freqtrade/data/btanalysis.py
+++ b/freqtrade/data/btanalysis.py
@@ -112,16 +112,16 @@ def load_trades_from_db(db_url: str) -> pd.DataFrame:
     return trades
 
 
-def load_trades(config) -> pd.DataFrame:
+def load_trades(source: str, db_url: str, exportfilename: str) -> pd.DataFrame:
     """
     Based on configuration option "trade_source":
     * loads data from DB (using `db_url`)
     * loads data from backtestfile (using `exportfilename`)
     """
-    if config["trade_source"] == "DB":
-        return load_trades_from_db(config["db_url"])
-    elif config["trade_source"] == "file":
-        return load_backtest_data(Path(config["exportfilename"]))
+    if source == "DB":
+        return load_trades_from_db(db_url)
+    elif source == "file":
+        return load_backtest_data(Path(exportfilename))
 
 
 def extract_trades_of_period(dataframe: pd.DataFrame, trades: pd.DataFrame) -> pd.DataFrame:
diff --git a/freqtrade/plot/plotting.py b/freqtrade/plot/plotting.py
index a057d3d94..900e9e90c 100644
--- a/freqtrade/plot/plotting.py
+++ b/freqtrade/plot/plotting.py
@@ -45,7 +45,10 @@ def init_plotscript(config):
         timerange=timerange,
     )
 
-    trades = load_trades(config)
+    trades = load_trades(config['trade_source'],
+                         db_url=config.get('db_url'),
+                         exportfilename=config.get('exportfilename'),
+                         )
     return {"tickers": tickers,
             "trades": trades,
             "pairs": pairs,
diff --git a/freqtrade/tests/data/test_btanalysis.py b/freqtrade/tests/data/test_btanalysis.py
index cf8cae566..90602b4fc 100644
--- a/freqtrade/tests/data/test_btanalysis.py
+++ b/freqtrade/tests/data/test_btanalysis.py
@@ -89,17 +89,20 @@ def test_load_trades(default_conf, mocker):
     db_mock = mocker.patch("freqtrade.data.btanalysis.load_trades_from_db", MagicMock())
     bt_mock = mocker.patch("freqtrade.data.btanalysis.load_backtest_data", MagicMock())
 
-    default_conf['trade_source'] = "DB"
-    load_trades(default_conf)
+    load_trades("DB",
+                db_url=default_conf.get('db_url'),
+                exportfilename=default_conf.get('exportfilename'),
+                )
 
     assert db_mock.call_count == 1
     assert bt_mock.call_count == 0
 
     db_mock.reset_mock()
     bt_mock.reset_mock()
-    default_conf['trade_source'] = "file"
     default_conf['exportfilename'] = "testfile.json"
-    load_trades(default_conf)
+    load_trades("file",
+                db_url=default_conf.get('db_url'),
+                exportfilename=default_conf.get('exportfilename'),)
 
     assert db_mock.call_count == 0
     assert bt_mock.call_count == 1