diff --git a/cmd/lotus-chainwatch/processor/common_actors.go b/cmd/lotus-chainwatch/processor/common_actors.go
index f74168485..d6aec7f90 100644
--- a/cmd/lotus-chainwatch/processor/common_actors.go
+++ b/cmd/lotus-chainwatch/processor/common_actors.go
@@ -16,7 +16,6 @@ import (
 	_init "github.com/filecoin-project/specs-actors/actors/builtin/init"
 	"github.com/filecoin-project/specs-actors/actors/util/adt"
 	"github.com/ipfs/go-cid"
-	"github.com/multiformats/go-multihash"
 	typegen "github.com/whyrusleeping/cbor-gen"
 )
 
@@ -244,8 +243,8 @@ func (p *Processor) storeActorHeads(actors map[cid.Cid]ActorTips) error {
 
 	for code, actTips := range actors {
 		actorName := code.String()
-		if s, err := multihash.Decode(code.Hash()); err != nil {
-			actorName = string(s.Digest)
+		if builtin.IsBuiltinActor(code) {
+			actorName = builtin.ActorNameByCode(code)
 		}
 		for _, actorInfo := range actTips {
 			for _, a := range actorInfo {
@@ -290,8 +289,8 @@ func (p *Processor) storeActorStates(actors map[cid.Cid]ActorTips) error {
 
 	for code, actTips := range actors {
 		actorName := code.String()
-		if s, err := multihash.Decode(code.Hash()); err != nil {
-			actorName = string(s.Digest)
+		if builtin.IsBuiltinActor(code) {
+			actorName = builtin.ActorNameByCode(code)
 		}
 		for _, actorInfo := range actTips {
 			for _, a := range actorInfo {