diff --git a/cmd/lotus-seal-worker/main.go b/cmd/lotus-seal-worker/main.go
index 4bcd00c80..208d64eb5 100644
--- a/cmd/lotus-seal-worker/main.go
+++ b/cmd/lotus-seal-worker/main.go
@@ -4,6 +4,7 @@ import (
 	"os"
 	"sync"
 
+	paramfetch "github.com/filecoin-project/go-paramfetch"
 	"github.com/filecoin-project/go-sectorbuilder"
 	"github.com/mitchellh/go-homedir"
 
@@ -11,12 +12,13 @@ import (
 	"golang.org/x/xerrors"
 	"gopkg.in/urfave/cli.v2"
 
+	manet "github.com/multiformats/go-multiaddr-net"
+
 	"github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/build"
 	lcli "github.com/filecoin-project/lotus/cli"
 	"github.com/filecoin-project/lotus/lib/lotuslog"
 	"github.com/filecoin-project/lotus/node/repo"
-	manet "github.com/multiformats/go-multiaddr-net"
 )
 
 var log = logging.Logger("main")
@@ -132,6 +134,10 @@ var runCmd = &cli.Command{
 			return err
 		}
 
+		if err := paramfetch.GetParams(build.ParametersJson(), ssize); err != nil {
+			return xerrors.Errorf("get params: %w", err)
+		}
+
 		sb, err := sectorbuilder.NewStandalone(&sectorbuilder.Config{
 			SectorSize:    ssize,
 			Miner:         act,
diff --git a/cmd/lotus-seal-worker/sub.go b/cmd/lotus-seal-worker/sub.go
index e0b8b0705..0c2d233de 100644
--- a/cmd/lotus-seal-worker/sub.go
+++ b/cmd/lotus-seal-worker/sub.go
@@ -4,12 +4,10 @@ import (
 	"context"
 	"net/http"
 
-	paramfetch "github.com/filecoin-project/go-paramfetch"
 	"github.com/filecoin-project/go-sectorbuilder"
 	"golang.org/x/xerrors"
 
 	lapi "github.com/filecoin-project/lotus/api"
-	"github.com/filecoin-project/lotus/build"
 )
 
 type worker struct {
@@ -23,10 +21,6 @@ type worker struct {
 }
 
 func acceptJobs(ctx context.Context, api lapi.StorageMiner, sb *sectorbuilder.SectorBuilder, limiter *limits, endpoint string, auth http.Header, repo string, noprecommit, nocommit bool) error {
-	if err := paramfetch.GetParams(build.ParametersJson(), sb.SectorSize()); err != nil {
-		return xerrors.Errorf("get params: %w", err)
-	}
-
 	w := &worker{
 		api:           api,
 		minerEndpoint: endpoint,