diff --git a/server.go b/server.go
index 61b8fd1f4f..c04e34aeb3 100644
--- a/server.go
+++ b/server.go
@@ -282,7 +282,7 @@ func (srv *Server) exportImage(image *Image, tempdir string) error {
 		}
 
 		// serialize filesystem
-		fs, err := archive.Tar(path.Join(srv.runtime.graph.Root, i.ID, "layer"), archive.Uncompressed)
+		fs, err := i.TarLayer()
 		if err != nil {
 			return err
 		}