diff --git a/core/blockchain.go b/core/blockchain.go
index 189ae7d9c2..028212a051 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -852,7 +852,7 @@ var lastWrite uint64
 
 // WriteBlockWithoutState writes only the block and its metadata to the database,
 // but does not write any state. This is used to construct competing side forks
-// up to teh point where they exceed the canonical total difficulty.
+// up to the point where they exceed the canonical total difficulty.
 func (bc *BlockChain) WriteBlockWithoutState(block *types.Block, td *big.Int) (err error) {
 	bc.wg.Add(1)
 	defer bc.wg.Done()
@@ -866,7 +866,7 @@ func (bc *BlockChain) WriteBlockWithoutState(block *types.Block, td *big.Int) (e
 	return nil
 }
 
-// WriteBlockWithState writes the block and all assocaited state to the database.
+// WriteBlockWithState writes the block and all associated state to the database.
 func (bc *BlockChain) WriteBlockWithState(block *types.Block, receipts []*types.Receipt, state *state.StateDB) (status WriteStatus, err error) {
 	bc.wg.Add(1)
 	defer bc.wg.Done()
diff --git a/trie/database.go b/trie/database.go
index 1b82ace7ad..fb7d5d57bd 100644
--- a/trie/database.go
+++ b/trie/database.go
@@ -72,7 +72,7 @@ func NewDatabase(diskdb ethdb.Database) *Database {
 	return &Database{
 		diskdb: diskdb,
 		nodes: map[common.Hash]*cachedNode{
-			common.Hash{}: {children: make(map[common.Hash]int)},
+			{}: {children: make(map[common.Hash]int)},
 		},
 		preimages: make(map[common.Hash][]byte),
 	}
@@ -218,7 +218,7 @@ func (db *Database) dereference(child common.Hash, parent common.Hash) {
 	if node.children[child] == 0 {
 		delete(node.children, child)
 	}
-	// If the node does not exist, it's a previously comitted node.
+	// If the node does not exist, it's a previously committed node.
 	node, ok := db.nodes[child]
 	if !ok {
 		return
@@ -289,7 +289,7 @@ func (db *Database) Commit(node common.Hash) error {
 
 // commit is the private locked version of Commit.
 func (db *Database) commit(hash common.Hash, batch *ethdb.Batch) error {
-	// If the node does not exist, it's a previously comitted node
+	// If the node does not exist, it's a previously committed node
 	node, ok := db.nodes[hash]
 	if !ok {
 		return nil