diff --git a/consensus/beacon/consensus.go b/consensus/beacon/consensus.go
index e856f4e6ce..80b85b9473 100644
--- a/consensus/beacon/consensus.go
+++ b/consensus/beacon/consensus.go
@@ -216,15 +216,14 @@ func (beacon *Beacon) VerifyUncles(chain consensus.ChainReader, block *types.Blo
 }
 
 // verifyHeader checks whether a header conforms to the consensus rules of the
-// stock Ethereum consensus engine. The difference between the beacon and classic is
+// stock Ethereum consensus engine. The differences between the beacon and classic are
 // (a) The following fields are expected to be constants:
 //   - difficulty is expected to be 0
 //   - nonce is expected to be 0
 //   - unclehash is expected to be Hash(emptyHeader)
-//     to be the desired constants
 //
 // (b) we don't verify if a block is in the future anymore
-// (c) the extradata is limited to 32 bytes
+// (c) the extra-data is limited to 32 bytes
 func (beacon *Beacon) verifyHeader(chain consensus.ChainHeaderReader, header, parent *types.Header) error {
 	// Ensure that the header's extra-data section is of a reasonable size
 	if len(header.Extra) > 32 {
diff --git a/core/blockchain.go b/core/blockchain.go
index baf2f9f82f..c401500f25 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -406,7 +406,7 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
 			}
 		}
 	}
-	// The first thing the node will do is reconstruct the verification data for
+	// The first thing the node will do is to reconstruct the verification data for
 	// the head block (ethash cache or clique voting snapshot). Might as well do
 	// it in advance.
 	bc.engine.VerifyHeader(bc, bc.CurrentHeader())