diff --git a/extern/sector-storage/mock/util.go b/extern/sector-storage/mock/util.go
index 2d2ebbfe2..5e6e3ecd3 100644
--- a/extern/sector-storage/mock/util.go
+++ b/extern/sector-storage/mock/util.go
@@ -1,5 +1,22 @@
 package mock
 
+import (
+	"fmt"
+
+	"golang.org/x/xerrors"
+
+	"github.com/filecoin-project/go-address"
+	"github.com/filecoin-project/go-commp-utils/zerocomm"
+	commcid "github.com/filecoin-project/go-fil-commcid"
+	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/go-state-types/big"
+	"github.com/filecoin-project/go-state-types/builtin/v8/market"
+
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/lotus/chain/wallet/key"
+	"github.com/filecoin-project/lotus/genesis"
+)
+
 func CommDR(in []byte) (out [32]byte) {
 	for i, b := range in {
 		out[i] = ^b
@@ -7,3 +24,58 @@ func CommDR(in []byte) (out [32]byte) {
 
 	return out
 }
+
+func PreSeal(spt abi.RegisteredSealProof, maddr address.Address, sectors int) (*genesis.Miner, *types.KeyInfo, error) {
+	k, err := key.GenerateKey(types.KTBLS)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	ssize, err := spt.SectorSize()
+	if err != nil {
+		return nil, nil, err
+	}
+
+	genm := &genesis.Miner{
+		ID:            maddr,
+		Owner:         k.Address,
+		Worker:        k.Address,
+		MarketBalance: big.NewInt(0),
+		PowerBalance:  big.NewInt(0),
+		SectorSize:    ssize,
+		Sectors:       make([]*genesis.PreSeal, sectors),
+	}
+
+	for i := range genm.Sectors {
+		label, err := market.NewLabelFromString(fmt.Sprintf("%d", i))
+		if err != nil {
+			return nil, nil, xerrors.Errorf("failed to create label: %w", err)
+		}
+
+		preseal := &genesis.PreSeal{}
+
+		preseal.ProofType = spt
+		preseal.CommD = zerocomm.ZeroPieceCommitment(abi.PaddedPieceSize(ssize).Unpadded())
+		d, _ := commcid.CIDToPieceCommitmentV1(preseal.CommD)
+		r := CommDR(d)
+		preseal.CommR, _ = commcid.ReplicaCommitmentV1ToCID(r[:])
+		preseal.SectorID = abi.SectorNumber(i + 1)
+		preseal.Deal = market.DealProposal{
+			PieceCID:             preseal.CommD,
+			PieceSize:            abi.PaddedPieceSize(ssize),
+			Client:               k.Address,
+			Provider:             maddr,
+			Label:                label,
+			StartEpoch:           1,
+			EndEpoch:             10000,
+			StoragePricePerEpoch: big.Zero(),
+			ProviderCollateral:   big.Zero(),
+			ClientCollateral:     big.Zero(),
+		}
+		preseal.DealClientKey = k
+
+		genm.Sectors[i] = preseal
+	}
+
+	return genm, &k.KeyInfo, nil
+}
diff --git a/itests/kit/ensemble.go b/itests/kit/ensemble.go
index 2181a6872..7aa461b90 100644
--- a/itests/kit/ensemble.go
+++ b/itests/kit/ensemble.go
@@ -59,7 +59,6 @@ import (
 	"github.com/filecoin-project/lotus/node/modules/dtypes"
 	testing2 "github.com/filecoin-project/lotus/node/modules/testing"
 	"github.com/filecoin-project/lotus/node/repo"
-	"github.com/filecoin-project/lotus/storage/mockstorage"
 )
 
 func init() {
@@ -247,7 +246,7 @@ func (n *Ensemble) Miner(minerNode *TestMiner, full *TestFullNode, opts ...NodeO
 
 		// Create the preseal commitment.
 		if n.options.mockProofs {
-			genm, k, err = mockstorage.PreSeal(proofType, actorAddr, sectors)
+			genm, k, err = mock.PreSeal(proofType, actorAddr, sectors)
 		} else {
 			genm, k, err = seed.PreSeal(actorAddr, proofType, 0, sectors, tdir, []byte("make genesis mem random"), nil, true)
 		}
diff --git a/storage/mockstorage/preseal.go b/storage/mockstorage/preseal.go
deleted file mode 100644
index 26db15b42..000000000
--- a/storage/mockstorage/preseal.go
+++ /dev/null
@@ -1,74 +0,0 @@
-package mockstorage
-
-import (
-	"fmt"
-
-	"golang.org/x/xerrors"
-
-	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/go-commp-utils/zerocomm"
-	commcid "github.com/filecoin-project/go-fil-commcid"
-	"github.com/filecoin-project/go-state-types/abi"
-	"github.com/filecoin-project/go-state-types/big"
-	markettypes "github.com/filecoin-project/go-state-types/builtin/v8/market"
-
-	"github.com/filecoin-project/lotus/chain/types"
-	"github.com/filecoin-project/lotus/chain/wallet/key"
-	"github.com/filecoin-project/lotus/extern/sector-storage/mock"
-	"github.com/filecoin-project/lotus/genesis"
-)
-
-func PreSeal(spt abi.RegisteredSealProof, maddr address.Address, sectors int) (*genesis.Miner, *types.KeyInfo, error) {
-	k, err := key.GenerateKey(types.KTBLS)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	ssize, err := spt.SectorSize()
-	if err != nil {
-		return nil, nil, err
-	}
-
-	genm := &genesis.Miner{
-		ID:            maddr,
-		Owner:         k.Address,
-		Worker:        k.Address,
-		MarketBalance: big.NewInt(0),
-		PowerBalance:  big.NewInt(0),
-		SectorSize:    ssize,
-		Sectors:       make([]*genesis.PreSeal, sectors),
-	}
-
-	for i := range genm.Sectors {
-		label, err := markettypes.NewLabelFromString(fmt.Sprintf("%d", i))
-		if err != nil {
-			return nil, nil, xerrors.Errorf("failed to create label: %w", err)
-		}
-
-		preseal := &genesis.PreSeal{}
-
-		preseal.ProofType = spt
-		preseal.CommD = zerocomm.ZeroPieceCommitment(abi.PaddedPieceSize(ssize).Unpadded())
-		d, _ := commcid.CIDToPieceCommitmentV1(preseal.CommD)
-		r := mock.CommDR(d)
-		preseal.CommR, _ = commcid.ReplicaCommitmentV1ToCID(r[:])
-		preseal.SectorID = abi.SectorNumber(i + 1)
-		preseal.Deal = markettypes.DealProposal{
-			PieceCID:             preseal.CommD,
-			PieceSize:            abi.PaddedPieceSize(ssize),
-			Client:               k.Address,
-			Provider:             maddr,
-			Label:                label,
-			StartEpoch:           1,
-			EndEpoch:             10000,
-			StoragePricePerEpoch: big.Zero(),
-			ProviderCollateral:   big.Zero(),
-			ClientCollateral:     big.Zero(),
-		}
-		preseal.DealClientKey = k
-
-		genm.Sectors[i] = preseal
-	}
-
-	return genm, &k.KeyInfo, nil
-}