diff --git a/core/txindexer.go b/core/txindexer.go
index 70fe5f3322..a985aba581 100644
--- a/core/txindexer.go
+++ b/core/txindexer.go
@@ -98,7 +98,7 @@ func (indexer *txIndexer) run(tail *uint64, head uint64, stop chan struct{}, don
 	// present), while the whole chain are requested for indexing.
 	if indexer.limit == 0 || head < indexer.limit {
 		if *tail > 0 {
-			// It can happen when chain is rewound to a historical point which
+			// It can happen when chain is rewound to an historical point which
 			// is even lower than the indexes tail, recap the indexing target
 			// to new head to avoid reading non-existent block bodies.
 			end := *tail
diff --git a/internal/era/accumulator.go b/internal/era/accumulator.go
index 2ece2755e1..9242d54c5c 100644
--- a/internal/era/accumulator.go
+++ b/internal/era/accumulator.go
@@ -47,7 +47,7 @@ func ComputeAccumulator(hashes []common.Hash, tds []*big.Int) (common.Hash, erro
 	return hh.HashRoot()
 }
 
-// headerRecord is an individual record for a historical header.
+// headerRecord is an individual record for an historical header.
 //
 // See https://github.com/ethereum/portal-network-specs/blob/master/history-network.md#the-header-accumulator
 // for more information.