diff --git a/freqtrade/persistence/models.py b/freqtrade/persistence/models.py
index a45274266..5eaca7966 100644
--- a/freqtrade/persistence/models.py
+++ b/freqtrade/persistence/models.py
@@ -161,7 +161,7 @@ class Order(_DECL_BASE):
         self.ft_is_open = True
         if self.status in ('closed', 'canceled', 'cancelled'):
             self.ft_is_open = False
-            if order.get('filled', 0) > 0:
+            if (order.get('filled', 0.0) or 0.0) > 0:
                 self.order_filled_date = datetime.now(timezone.utc)
         self.order_update_date = datetime.now(timezone.utc)
 
diff --git a/tests/test_persistence.py b/tests/test_persistence.py
index 105cee23a..d036b045e 100644
--- a/tests/test_persistence.py
+++ b/tests/test_persistence.py
@@ -1224,6 +1224,11 @@ def test_update_order_from_ccxt(caplog):
     assert o.ft_is_open
     assert o.order_filled_date is None
 
+    # Order is unfilled, "filled" not set
+    # https://github.com/freqtrade/freqtrade/issues/5404
+    ccxt_order.update({'filled': None, 'remaining': 20.0, 'status': 'canceled'})
+    o.update_from_ccxt_object(ccxt_order)
+
     # Order has been closed
     ccxt_order.update({'filled': 20.0, 'remaining': 0.0, 'status': 'closed'})
     o.update_from_ccxt_object(ccxt_order)