diff --git a/sharding/collation.go b/sharding/collation.go
index dfa923430..b0e4fa985 100644
--- a/sharding/collation.go
+++ b/sharding/collation.go
@@ -193,7 +193,7 @@ func Deserialize(serialisedBlob []byte) (*[]*types.Transaction, error) {
 
 
 // Chunks is a wrapper around a chunk array to implement DerivableList,
-// which allows us to Merklize the chunks into the chunkRoot
+// which allows us to Merklize the chunks into the chunkRoot.
 type Chunks []byte
 
 // Len returns the number of chunks in this list.
diff --git a/sharding/shard.go b/sharding/shard.go
index cf967745b..fb287750e 100644
--- a/sharding/shard.go
+++ b/sharding/shard.go
@@ -77,11 +77,12 @@ func (s *Shard) CollationByHash(headerHash *common.Hash) (*Collation, error) {
 	if err != nil {
 		return nil, fmt.Errorf("cannot fetch body by chunk root: %v", err)
 	}
-	// TODO: deserializes the body into a txs slice instead of using
+	
+	// deserialize the body into a txs slice instead of using
 	// nil as the third arg to MakeCollation.
 	txs, err := Deserialize(body)
 	if err != nil {
-		return nil, fmt.Errorf("cannot deserialize body", err)
+		return nil, fmt.Errorf("cannot deserialize body: %v", err)
 	}
 	col := NewCollation(header, body, *txs)
 	return col, nil