diff --git a/freqtrade/data/metrics.py b/freqtrade/data/metrics.py
index 87a60daf0..09410667b 100644
--- a/freqtrade/data/metrics.py
+++ b/freqtrade/data/metrics.py
@@ -163,21 +163,12 @@ def calculate_underwater(
 
 @dataclass()
 class DrawDownResult:
-    __slots__ = [
-        "drawdown_abs",
-        "high_date",
-        "low_date",
-        "high_value",
-        "low_value",
-        "relative_account_drawdown",
-    ]
-
-    drawdown_abs: float
-    high_date: datetime
-    low_date: datetime
-    high_value: float
-    low_value: float
-    relative_account_drawdown: float
+    drawdown_abs: float = 0.0
+    high_date: datetime = None
+    low_date: datetime = None
+    high_value: float = 0.0
+    low_value: float = 0.0
+    relative_account_drawdown: float = 0.0
 
 
 def calc_max_drawdown(
diff --git a/freqtrade/rpc/rpc.py b/freqtrade/rpc/rpc.py
index c949caea4..4f60e3049 100644
--- a/freqtrade/rpc/rpc.py
+++ b/freqtrade/rpc/rpc.py
@@ -596,7 +596,7 @@ class RPC:
 
         expectancy, expectancy_ratio = calculate_expectancy(trades_df)
 
-        drawdown = DrawDownResult(0.0, 0.0, None, None, 0.0)
+        drawdown = DrawDownResult()
         if len(trades_df) > 0:
             try:
                 drawdown = calc_max_drawdown(