From 29e11ad5488f3675a54e8a588de2cf01b91e8a67 Mon Sep 17 00:00:00 2001
From: MariusVanDerWijden <m.vanderwijden@live.de>
Date: Wed, 10 Sep 2025 11:33:38 +0200
Subject: [PATCH] core/txpool/legacypool: fix bug

---
 core/txpool/legacypool/list.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/core/txpool/legacypool/list.go b/core/txpool/legacypool/list.go
index bf92d8d58e..0c9f13c62f 100644
--- a/core/txpool/legacypool/list.go
+++ b/core/txpool/legacypool/list.go
@@ -336,7 +336,9 @@ func (l *list) Add(tx *types.Transaction, priceBump uint64) (bool, *types.Transa
 	l.totalcost = total
 
 	// Old is being replaced, subtract old cost
-	l.subTotalCost([]*types.Transaction{old})
+	if old != nil {
+		l.subTotalCost([]*types.Transaction{old})
+	}
 
 	// Otherwise overwrite the old transaction with the current one
 	l.txs.Put(tx)