diff --git a/lib/rpcenc/reader.go b/lib/rpcenc/reader.go
index 1e00fb6be..4e3ebb8c2 100644
--- a/lib/rpcenc/reader.go
+++ b/lib/rpcenc/reader.go
@@ -15,14 +15,14 @@ import (
 	"sync"
 	"time"
 
-	sealing "github.com/filecoin-project/lotus/extern/storage-sealing/lib/nullreader"
-
 	"github.com/google/uuid"
 	logging "github.com/ipfs/go-log/v2"
 	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/go-jsonrpc"
 	"github.com/filecoin-project/go-state-types/abi"
+
+	"github.com/filecoin-project/lotus/extern/storage-sealing/lib/nullreader"
 )
 
 var log = logging.Logger("rpcenc")
@@ -102,7 +102,7 @@ func ReaderParamEncoder(addr string) jsonrpc.Option {
 	return jsonrpc.WithParamEncoder(new(io.Reader), func(value reflect.Value) (reflect.Value, error) {
 		r := value.Interface().(io.Reader)
 
-		if r, ok := r.(*sealing.NullReader); ok {
+		if r, ok := r.(*nullreader.NullReader); ok {
 			return reflect.ValueOf(ReaderStream{Type: Null, Info: fmt.Sprint(r.N)}), nil
 		}
 
@@ -419,7 +419,7 @@ func ReaderParamDecoder() (http.HandlerFunc, jsonrpc.ServerOption) {
 				return reflect.Value{}, xerrors.Errorf("parsing null byte count: %w", err)
 			}
 
-			return reflect.ValueOf(sealing.NewNullReader(abi.UnpaddedPieceSize(n))), nil
+			return reflect.ValueOf(nullreader.NewNullReader(abi.UnpaddedPieceSize(n))), nil
 		}
 
 		u, err := uuid.Parse(rs.Info)
diff --git a/lib/rpcenc/reader_test.go b/lib/rpcenc/reader_test.go
index 06171025a..881cbeaae 100644
--- a/lib/rpcenc/reader_test.go
+++ b/lib/rpcenc/reader_test.go
@@ -9,13 +9,13 @@ import (
 	"strings"
 	"testing"
 
-	sealing "github.com/filecoin-project/lotus/extern/storage-sealing/lib/nullreader"
-
 	"github.com/gorilla/mux"
 	"github.com/stretchr/testify/require"
 	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/go-jsonrpc"
+
+	"github.com/filecoin-project/lotus/extern/storage-sealing/lib/nullreader"
 )
 
 type ReaderHandler struct {
@@ -58,7 +58,7 @@ func (h *ReaderHandler) ReadAll(ctx context.Context, r io.Reader) ([]byte, error
 }
 
 func (h *ReaderHandler) ReadNullLen(ctx context.Context, r io.Reader) (int64, error) {
-	return r.(*sealing.NullReader).N, nil
+	return r.(*nullreader.NullReader).N, nil
 }
 
 func (h *ReaderHandler) ReadUrl(ctx context.Context, u string) (string, error) {
@@ -119,7 +119,7 @@ func TestNullReaderProxy(t *testing.T) {
 
 	defer closer()
 
-	n, err := client.ReadNullLen(context.TODO(), sealing.NewNullReader(1016))
+	n, err := client.ReadNullLen(context.TODO(), nullreader.NewNullReader(1016))
 	require.NoError(t, err)
 	require.Equal(t, int64(1016), n)
 }