diff --git a/cmd/integration/commands/refetence_db.go b/cmd/integration/commands/refetence_db.go
index 5730e1045..6f24a4409 100644
--- a/cmd/integration/commands/refetence_db.go
+++ b/cmd/integration/commands/refetence_db.go
@@ -405,7 +405,7 @@ MainLoop:
 
 func lmdbToMdbx(ctx context.Context, from, to string) error {
 	_ = os.RemoveAll(to)
-	src := ethdb.NewLMDB().Path(from).Flags(func(flags uint) uint { return (flags | lmdb.Readonly) ^ lmdb.NoReadahead }).MustOpen()
+	src := ethdb.NewLMDB().Path(from).MustOpen()
 	dst := ethdb.NewMDBX().Path(to).MustOpen()
 	return kv2kv(ctx, src, dst)
 }