diff --git a/pkg/local_object_storage/blobstor/put.go b/pkg/local_object_storage/blobstor/put.go
index 05c52abd7..b62858fc5 100644
--- a/pkg/local_object_storage/blobstor/put.go
+++ b/pkg/local_object_storage/blobstor/put.go
@@ -6,31 +6,25 @@ import (
 	"path"
 
 	objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
-	"github.com/nspcc-dev/neofs-node/pkg/core/object"
 	"github.com/pkg/errors"
 )
 
 // PutPrm groups the parameters of Put operation.
 type PutPrm struct {
-	obj *object.Object
+	rwObject
 }
 
 // PutRes groups resulting values of Put operation.
-type PutRes struct{}
-
-// WithObject is a Put option to set object to save.
-//
-// Option is required.
-func (p *PutPrm) WithObject(obj *object.Object) *PutPrm {
-	if p != nil {
-		p.obj = obj
-	}
-
-	return p
+type PutRes struct {
+	roBlobovniczaID
 }
 
 // Put saves the object in BLOB storage.
 //
+// If object is "big", BlobStor saves the object in shallow dir.
+// Otherwise, BlobStor saves the object in blobonicza. In this
+// case the identifier of blobovnicza is returned.
+//
 // Returns any error encountered that
 // did not allow to completely save the object.
 func (b *BlobStor) Put(prm *PutPrm) (*PutRes, error) {
diff --git a/pkg/local_object_storage/shard/put.go b/pkg/local_object_storage/shard/put.go
index 29c74f8bc..8c941eebc 100644
--- a/pkg/local_object_storage/shard/put.go
+++ b/pkg/local_object_storage/shard/put.go
@@ -39,11 +39,12 @@ func (s *Shard) Put(prm *PutPrm) (*PutRes, error) {
 	// try to put to WriteCache
 	// TODO: implement
 
+	// form Put parameters
+	putPrm := new(blobstor.PutPrm)
+	putPrm.SetObject(prm.obj)
+
 	// put to BlobStor
-	if _, err := s.blobStor.Put(
-		new(blobstor.PutPrm).
-			WithObject(prm.obj),
-	); err != nil {
+	if _, err := s.blobStor.Put(putPrm); err != nil {
 		return nil, errors.Wrap(err, "could not put object to BLOB storage")
 	}