diff --git a/piecedirectory/doctor.go b/piecedirectory/doctor.go
index 020b4cb71..4a3d24742 100644
--- a/piecedirectory/doctor.go
+++ b/piecedirectory/doctor.go
@@ -19,6 +19,7 @@ import (
 	"github.com/filecoin-project/lotus/chain/types"
 	"github.com/ipfs/go-cid"
 	logging "github.com/ipfs/go-log/v2"
+	verifregtypes "github.com/filecoin-project/go-state-types/builtin/v9/verifreg"
 )
 
 var doclog = logging.Logger("piecedoc")