diff --git a/core/block_validator.go b/core/block_validator.go
index <HASH>..<HASH> 100644
--- a/core/block_validator.go
+++ b/core/block_validator.go
@@ -89,7 +89,7 @@ func (v *BlockValidator) ValidateState(block *types.Block, statedb *state.StateD
 	if rbloom != header.Bloom {
 		return fmt.Errorf("invalid bloom (remote: %x  local: %x)", header.Bloom, rbloom)
 	}
-	// Tre receipt Trie's root (R = (Tr [[H1, R1], ... [Hn, R1]]))
+	// Tre receipt Trie's root (R = (Tr [[H1, R1], ... [Hn, Rn]]))
 	receiptSha := types.DeriveSha(receipts, new(trie.Trie))
 	if receiptSha != header.ReceiptHash {
 		return fmt.Errorf("invalid receipt root hash (remote: %x local: %x)", header.ReceiptHash, receiptSha)
core: fix a typo in comment (#<I>)