diff --git a/freqtrade/persistence/models.py b/freqtrade/persistence/models.py
index c6ad2dc45..27ba60cbe 100644
--- a/freqtrade/persistence/models.py
+++ b/freqtrade/persistence/models.py
@@ -374,7 +374,7 @@ class LocalTrade():
                            if self.close_date else None),
             'close_timestamp': int(self.close_date.replace(
                 tzinfo=timezone.utc).timestamp() * 1000) if self.close_date else None,
-            'realized_profit': self.realized_profit,
+            'realized_profit': self.realized_profit or 0.0,
             'close_rate': self.close_rate,
             'close_rate_requested': self.close_rate_requested,
             'close_profit': self.close_profit,  # Deprecated
diff --git a/tests/test_persistence.py b/tests/test_persistence.py
index 520ac725f..71a22b055 100644
--- a/tests/test_persistence.py
+++ b/tests/test_persistence.py
@@ -879,6 +879,7 @@ def test_to_json(default_conf, fee):
                       'stake_amount': 0.001,
                       'trade_duration': None,
                       'trade_duration_s': None,
+                      'realized_profit': 0.0,
                       'close_profit': None,
                       'close_profit_pct': None,
                       'close_profit_abs': None,
@@ -945,6 +946,7 @@ def test_to_json(default_conf, fee):
                       'initial_stop_loss_abs': None,
                       'initial_stop_loss_pct': None,
                       'initial_stop_loss_ratio': None,
+                      'realized_profit': 0.0,
                       'close_profit': None,
                       'close_profit_pct': None,
                       'close_profit_abs': None,