diff --git a/freqtrade/optimize/backtesting.py b/freqtrade/optimize/backtesting.py
index 4da8390af..737cede9d 100644
--- a/freqtrade/optimize/backtesting.py
+++ b/freqtrade/optimize/backtesting.py
@@ -609,7 +609,8 @@ class Backtesting:
         for pair in open_trades.keys():
             if len(open_trades[pair]) > 0:
                 for trade in open_trades[pair]:
-                    if trade.open_order_id:
+                    if trade.open_order_id and trade.nr_of_successful_buys == 0:
+                        # Ignore trade if buy-order did not fill yet
                         continue
                     sell_row = data[pair][-1]