diff --git a/core/state_prefetcher.go b/core/state_prefetcher.go
index 4f71e33cb1..68fb444188 100644
--- a/core/state_prefetcher.go
+++ b/core/state_prefetcher.go
@@ -66,7 +66,7 @@ func (p *statePrefetcher) Prefetch(transactions types.Transactions, header *type
 
 	// Iterate over and process the individual transactions
 	for i, tx := range transactions {
-		stateCpy := statedb.CopyDoPrefetch() // closure
+		stateCpy := statedb.CopyDoPrefetch()
 		workers.Go(func() error {
 			// If block precaching was interrupted, abort
 			if interrupt != nil && interrupt.Load() {
diff --git a/miner/bid_simulator.go b/miner/bid_simulator.go
index b81ab2614e..9bcb6a1da3 100644
--- a/miner/bid_simulator.go
+++ b/miner/bid_simulator.go
@@ -771,8 +771,7 @@ func (b *bidSimulator) simBid(interruptCh chan int32, bidRuntime *BidRuntime) {
 	if len(bidRuntime.bid.Txs) > prefetchTxNumber {
 		var interrupt atomic.Bool
 		defer interrupt.Store(true) // terminate the prefetch at the end
-		// TODO(Nathan): use ReadersWithCacheStats to accelerate
-		throwaway := bidRuntime.env.state.CopyDoPrefetch()
+		throwaway := bidRuntime.env.state.StateForPrefetch()
 		// Disable tracing for prefetcher executions.
 		vmCfg := *b.chain.GetVMConfig()
 		vmCfg.Tracer = nil