From 1e944c188559e151b6385d16d8f4f5151911a34b Mon Sep 17 00:00:00 2001
From: 0xcharry <idea.sermons.5p@icloud.com>
Date: Wed, 11 Feb 2026 16:01:35 +0100
Subject: [PATCH] Update filter_system.go

---
 eth/filters/filter_system.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/eth/filters/filter_system.go b/eth/filters/filter_system.go
index 1f92c4e36f..794f7eca0b 100644
--- a/eth/filters/filter_system.go
+++ b/eth/filters/filter_system.go
@@ -115,7 +115,11 @@ func (sys *FilterSystem) cachedLogElem(ctx context.Context, blockHash common.Has
 	}
 	// Database logs are un-derived.
 	// Fill in whatever we can (txHash is inaccessible at this point).
-	flattened := make([]*types.Log, 0)
+	totalLogs := 0
+	for _, txLogs := range logs {
+		totalLogs += len(txLogs)
+	}
+	flattened := make([]*types.Log, 0, totalLogs)
 	var logIdx uint
 	for i, txLogs := range logs {
 		for _, log := range txLogs {