diff --git a/shared/commp.go b/commp/commp.go
similarity index 98%
rename from shared/commp.go
rename to commp/commp.go
index 4815c446..fd230562 100644
--- a/shared/commp.go
+++ b/commp/commp.go
@@ -1,4 +1,4 @@
-package shared
+package commp
 
 import (
 	"io"
diff --git a/storagemarket/impl/provider_environments.go b/storagemarket/impl/provider_environments.go
index 210c46d0..b17521e4 100644
--- a/storagemarket/impl/provider_environments.go
+++ b/storagemarket/impl/provider_environments.go
@@ -14,9 +14,9 @@ import (
 	"github.com/filecoin-project/go-address"
 	"github.com/filecoin-project/go-state-types/abi"
 
+	"github.com/filecoin-project/go-fil-markets/commp"
 	"github.com/filecoin-project/go-fil-markets/filestore"
 	"github.com/filecoin-project/go-fil-markets/piecestore"
-	"github.com/filecoin-project/go-fil-markets/shared"
 	"github.com/filecoin-project/go-fil-markets/storagemarket"
 	"github.com/filecoin-project/go-fil-markets/storagemarket/impl/providerstates"
 	"github.com/filecoin-project/go-fil-markets/storagemarket/network"
@@ -109,7 +109,7 @@ func (p *providerDealEnvironment) GeneratePieceCommitment(proposalCid cid.Cid, c
 		}
 	}()
 
-	pieceCID, err := shared.GenerateCommp(rd.DataReader(), rd.Header.DataSize, uint64(dealSize))
+	pieceCID, err := commp.GenerateCommp(rd.DataReader(), rd.Header.DataSize, uint64(dealSize))
 	return pieceCID, "", err
 }
 
diff --git a/storagemarket/testnodes/testnodes.go b/storagemarket/testnodes/testnodes.go
index 814eb241..14c53ac4 100644
--- a/storagemarket/testnodes/testnodes.go
+++ b/storagemarket/testnodes/testnodes.go
@@ -22,6 +22,7 @@ import (
 	"github.com/filecoin-project/specs-actors/actors/builtin/market"
 	"github.com/filecoin-project/specs-actors/actors/builtin/verifreg"
 
+	"github.com/filecoin-project/go-fil-markets/commp"
 	"github.com/filecoin-project/go-fil-markets/shared"
 	"github.com/filecoin-project/go-fil-markets/shared_testutil"
 	"github.com/filecoin-project/go-fil-markets/storagemarket"
@@ -394,7 +395,7 @@ func (n *FakeProviderNode) OnDealComplete(ctx context.Context, deal storagemarke
 	}
 
 	// Generate commP
-	pieceCID, err := shared.GenerateCommp(pieceReader, uint64(pieceSize), uint64(pieceSize))
+	pieceCID, err := commp.GenerateCommp(pieceReader, uint64(pieceSize), uint64(pieceSize))
 	if err != nil {
 		return nil, fmt.Errorf("on deal complete: generating commp: %w", err)
 	}