diff --git a/tests/test_persistence.py b/tests/test_persistence.py
index 89d07ca74..8e486d145 100644
--- a/tests/test_persistence.py
+++ b/tests/test_persistence.py
@@ -861,6 +861,7 @@ def test_to_json(default_conf, fee):
         open_date=arrow.utcnow().shift(hours=-2).datetime,
         open_rate=0.123,
         exchange='binance',
+        buy_signal_name='',
         open_order_id='dry_run_buy_12345'
     )
     result = trade.to_json()
@@ -910,6 +911,7 @@ def test_to_json(default_conf, fee):
                       'min_rate': None,
                       'max_rate': None,
                       'strategy': None,
+                      'buy_signal_name': '',
                       'timeframe': None,
                       'exchange': 'binance',
                       }
@@ -926,6 +928,7 @@ def test_to_json(default_conf, fee):
         close_date=arrow.utcnow().shift(hours=-1).datetime,
         open_rate=0.123,
         close_rate=0.125,
+        buy_signal_name='buys_signal_001',
         exchange='binance',
     )
     result = trade.to_json()
@@ -975,6 +978,7 @@ def test_to_json(default_conf, fee):
                       'sell_reason': None,
                       'sell_order_status': None,
                       'strategy': None,
+                      'buy_signal_name': 'buys_signal_001',
                       'timeframe': None,
                       'exchange': 'binance',
                       }