diff --git a/rbd/rbd.go b/rbd/rbd.go
index a775ea6..0f6a91f 100644
--- a/rbd/rbd.go
+++ b/rbd/rbd.go
@@ -360,10 +360,6 @@ func Create4(ioctx *rados.IOContext, name string, size uint64, rio *RbdImageOpti
 // int rbd_clone(rados_ioctx_t p_ioctx, const char *p_name,
 //           const char *p_snapname, rados_ioctx_t c_ioctx,
 //           const char *c_name, uint64_t features, int *c_order);
-// int rbd_clone2(rados_ioctx_t p_ioctx, const char *p_name,
-//            const char *p_snapname, rados_ioctx_t c_ioctx,
-//            const char *c_name, uint64_t features, int *c_order,
-//            uint64_t stripe_unit, int stripe_count);
 func (image *Image) Clone(snapname string, c_ioctx *rados.IOContext, c_name string, features uint64, order int) (*Image, error) {
 	if err := image.validate(imageNeedsIOContext); err != nil {
 		return nil, err