diff --git a/core/types/withdrawal.go b/core/types/withdrawal.go
index 7671fd60df..6f99e53b56 100644
--- a/core/types/withdrawal.go
+++ b/core/types/withdrawal.go
@@ -43,18 +43,18 @@ type withdrawalMarshaling struct {
 	Amount    hexutil.Uint64
 }
 
-var withdrawalSize = common.StorageSize(reflect.TypeOf(Withdrawal{}).Size())
-
-func (w Withdrawal) Size() common.StorageSize {
-	return common.StorageSize(withdrawalSize)
-}
-
 // Withdrawals implements DerivableList for withdrawals.
 type Withdrawals []*Withdrawal
 
 // Len returns the length of s.
 func (s Withdrawals) Len() int { return len(s) }
 
+var withdrawalSize = int(reflect.TypeOf(Withdrawal{}).Size())
+
+func (s Withdrawals) Size() int {
+	return withdrawalSize * len(s)
+}
+
 // EncodeIndex encodes the i'th withdrawal to w. Note that this does not check for errors
 // because we assume that *Withdrawal will only ever contain valid withdrawals that were either
 // constructed by decoding or via public API in this package.
diff --git a/eth/downloader/queue.go b/eth/downloader/queue.go
index 8346d40232..5441ad1187 100644
--- a/eth/downloader/queue.go
+++ b/eth/downloader/queue.go
@@ -385,9 +385,7 @@ func (q *queue) Results(block bool) []*fetchResult {
 		for _, tx := range result.Transactions {
 			size += common.StorageSize(tx.Size())
 		}
-		for _, withdrawal := range result.Withdrawals {
-			size += withdrawal.Size()
-		}
+		size += common.StorageSize(result.Withdrawals.Size())
 		q.resultSize = common.StorageSize(blockCacheSizeWeight)*size +
 			(1-common.StorageSize(blockCacheSizeWeight))*q.resultSize
 	}