diff --git a/lib/sectorbuilder/mock.go b/lib/sectorbuilder/mock.go
index 481b982b4..e9661ada1 100644
--- a/lib/sectorbuilder/mock.go
+++ b/lib/sectorbuilder/mock.go
@@ -46,7 +46,7 @@ func TempSectorbuilderDir(dir string, sectorSize uint64, ds dtypes.MetadataDS) (
 
 		WorkerThreads: 2,
 		Miner:         addr,
-	}, ds, nil)
+	}, ds)
 	if err != nil {
 		return nil, err
 	}
diff --git a/lib/sectorbuilder/sectorbuilder.go b/lib/sectorbuilder/sectorbuilder.go
index bdc8d5a66..9c2b24af2 100644
--- a/lib/sectorbuilder/sectorbuilder.go
+++ b/lib/sectorbuilder/sectorbuilder.go
@@ -1,7 +1,6 @@
 package sectorbuilder
 
 import (
-	"context"
 	"fmt"
 	"io"
 	"os"
@@ -13,7 +12,6 @@ import (
 	sectorbuilder "github.com/filecoin-project/go-sectorbuilder"
 	"github.com/ipfs/go-datastore"
 	logging "github.com/ipfs/go-log"
-	"go.uber.org/fx"
 	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/lotus/chain/address"
@@ -77,7 +75,7 @@ type Config struct {
 	MetadataDir string
 }
 
-func New(cfg *Config, ds dtypes.MetadataDS, lc fx.Lifecycle) (*SectorBuilder, error) {
+func New(cfg *Config, ds dtypes.MetadataDS) (*SectorBuilder, error) {
 	if cfg.WorkerThreads <= PoStReservedWorkers {
 		return nil, xerrors.Errorf("minimum worker threads is %d, specified %d", PoStReservedWorkers+1, cfg.WorkerThreads)
 	}
@@ -126,15 +124,6 @@ func New(cfg *Config, ds dtypes.MetadataDS, lc fx.Lifecycle) (*SectorBuilder, er
 		rateLimit: make(chan struct{}, cfg.WorkerThreads-PoStReservedWorkers),
 	}
 
-	if lc != nil {
-		lc.Append(fx.Hook{
-			OnStop: func(context.Context) error {
-				sb.Destroy()
-				return nil
-			},
-		})
-	}
-
 	return sb, nil
 }
 
@@ -196,9 +185,6 @@ func (sb *SectorBuilder) AddPiece(pieceSize uint64, sectorId uint64, file io.Rea
 	if err != nil {
 		return PublicPieceInfo{}, err
 	}
-	/*if writeUnpadded != pieceSize {
-		return PublicPieceInfo{}, xerrors.Errorf("writeUnpadded != pieceSize: %d != %d", writeUnpadded, pieceSize)
-	}*/
 
 	if err := stagedFile.Close(); err != nil {
 		return PublicPieceInfo{}, err
diff --git a/node/builder.go b/node/builder.go
index 0956a67c1..da37bb95f 100644
--- a/node/builder.go
+++ b/node/builder.go
@@ -230,7 +230,7 @@ func Online() Option {
 		// Storage miner
 		ApplyIf(func(s *Settings) bool { return s.nodeType == repo.RepoStorageMiner },
 			Override(new(*sectorbuilder.SectorBuilder), sectorbuilder.New),
-			Override(new(*sectorblocks.SectorBlocks), sectorblocks.NewSectorBlocks),
+			Override(new(*sectorblocks.SectorBlocks), modules.SectorBuilder),
 			Override(new(storage.TicketFn), modules.SealTicketGen),
 			Override(new(*storage.Miner), modules.StorageMiner),
 
diff --git a/node/modules/storageminer.go b/node/modules/storageminer.go
index 3c827c550..0c97710cb 100644
--- a/node/modules/storageminer.go
+++ b/node/modules/storageminer.go
@@ -176,6 +176,22 @@ func RegisterMiner(lc fx.Lifecycle, ds dtypes.MetadataDS, api api.FullNode) erro
 	return nil
 }
 
+func SectorBuilder(lc fx.Lifecycle, cfg *sectorbuilder.Config, ds dtypes.MetadataDS) (*sectorbuilder.SectorBuilder, error) {
+	sb, err := sectorbuilder.New(cfg, ds)
+	if err != nil {
+		return nil, err
+	}
+
+	lc.Append(fx.Hook{
+		OnStop: func(context.Context) error {
+			sb.Destroy()
+			return nil
+		},
+	})
+
+	return sb, nil
+}
+
 func SealTicketGen(api api.FullNode) storage.TicketFn {
 	return func(ctx context.Context) (*sectorbuilder.SealTicket, error) {
 		ts, err := api.ChainHead(ctx)