diff --git a/freqtrade/data/btanalysis.py b/freqtrade/data/btanalysis.py
index 3803beb70..6911941e6 100644
--- a/freqtrade/data/btanalysis.py
+++ b/freqtrade/data/btanalysis.py
@@ -511,9 +511,7 @@ def calculate_max_drawdown(trades: pd.DataFrame, *, date_col: str = 'close_date'
     high_val = max_drawdown_df.loc[max_drawdown_df.iloc[:idxmin]
                                    ['high_value'].idxmax(), 'cumulative']
     low_val = max_drawdown_df.loc[idxmin, 'cumulative']
-    max_drawdown_rel = 0.0
-    if starting_balance != 0:
-        max_drawdown_rel = max_drawdown_df.loc[idxmin, 'drawdown_relative']
+    max_drawdown_rel = max_drawdown_df.loc[idxmin, 'drawdown_relative']
 
     return (
         abs(min(max_drawdown_df['drawdown'])),
diff --git a/tests/test_plotting.py b/tests/test_plotting.py
index 940639465..ba602dd40 100644
--- a/tests/test_plotting.py
+++ b/tests/test_plotting.py
@@ -331,7 +331,13 @@ def test_generate_profit_graph(testdatadir):
 
     trades = trades[trades['pair'].isin(pairs)]
 
-    fig = generate_profit_graph(pairs, data, trades, timeframe="5m", stake_currency='BTC')
+    fig = generate_profit_graph(
+        pairs,
+        data,
+        trades,
+        timeframe="5m",
+        stake_currency='BTC',
+        starting_balance=0)
     assert isinstance(fig, go.Figure)
 
     assert fig.layout.title.text == "Freqtrade Profit plot"
@@ -340,7 +346,7 @@ def test_generate_profit_graph(testdatadir):
     assert fig.layout.yaxis3.title.text == "Profit BTC"
 
     figure = fig.layout.figure
-    assert len(figure.data) == 7
+    assert len(figure.data) == 8
 
     avgclose = find_trace_in_fig_data(figure.data, "Avg close price")
     assert isinstance(avgclose, go.Scatter)
@@ -355,6 +361,9 @@ def test_generate_profit_graph(testdatadir):
     underwater = find_trace_in_fig_data(figure.data, "Underwater Plot")
     assert isinstance(underwater, go.Scatter)
 
+    underwater_relative = find_trace_in_fig_data(figure.data, "Underwater Plot (%)")
+    assert isinstance(underwater_relative, go.Scatter)
+
     for pair in pairs:
         profit_pair = find_trace_in_fig_data(figure.data, f"Profit {pair}")
         assert isinstance(profit_pair, go.Scatter)
@@ -362,7 +371,7 @@ def test_generate_profit_graph(testdatadir):
     with pytest.raises(OperationalException, match=r"No trades found.*"):
         # Pair cannot be empty - so it's an empty dataframe.
         generate_profit_graph(pairs, data, trades.loc[trades['pair'].isnull()], timeframe="5m",
-                              stake_currency='BTC')
+                              stake_currency='BTC', starting_balance=0)
 
 
 def test_start_plot_dataframe(mocker):
@@ -444,6 +453,7 @@ def test_plot_profit(default_conf, mocker, testdatadir):
     default_conf['datadir'] = testdatadir
     default_conf['exportfilename'] = testdatadir / 'backtest-result_test_nofile.json'
     default_conf['pairs'] = ['ETH/BTC', 'LTC/BTC']
+    default_conf['available_capital'] = 1000
 
     profit_mock = MagicMock()
     store_mock = MagicMock()