diff --git a/commonfile/fileservice/fileservice.go b/commonfile/fileservice/fileservice.go
index 0202fb02..0c23a5fc 100644
--- a/commonfile/fileservice/fileservice.go
+++ b/commonfile/fileservice/fileservice.go
@@ -31,6 +31,8 @@ type FileService interface {
 	GetFile(ctx context.Context, c cid.Cid) (ufsio.ReadSeekCloser, error)
 	// AddFile adds file to ipfs storage
 	AddFile(ctx context.Context, r io.Reader) (ipld.Node, error)
+	// DAGService returns ipld.DAGService object
+	DAGService() ipld.DAGService
 	app.Component
 }
 
@@ -60,6 +62,10 @@ func (fs *fileService) Name() string {
 	return CName
 }
 
+func (fs *fileService) DAGService() ipld.DAGService {
+	return fs.merkledag
+}
+
 func (fs *fileService) AddFile(ctx context.Context, r io.Reader) (ipld.Node, error) {
 	dbp := helpers.DagBuilderParams{
 		Dagserv:    fs.merkledag,