diff --git a/cmd/skopeo/sync.go b/cmd/skopeo/sync.go
index a304aa39..6884d8b1 100644
--- a/cmd/skopeo/sync.go
+++ b/cmd/skopeo/sync.go
@@ -552,6 +552,8 @@ func (opts *syncOptions) run(args []string, stdout io.Writer) (retErr error) {
 		return errors.New("sync from 'dir' to 'dir' not implemented, consider using rsync instead")
 	}
 
+	opts.destImage.warnAboutIneffectiveOptions(transports.Get(opts.destination))
+
 	imageListSelection := copy.CopySystemImage
 	if opts.all {
 		imageListSelection = copy.CopyAllImages