* clutter_box_pack_after:
* @box: a #ClutterBox
* @actor: a #ClutterActor
- * @sibling: (allow none): a #ClutterActor or %NULL
+ * @sibling: (allow-none): a #ClutterActor or %NULL
* @first_property: the name of the first property to set, or %NULL
* @Varargs: a list of property name and value pairs, terminated by %NULL
*
* clutter_box_pack_before:
* @box: a #ClutterBox
* @actor: a #ClutterActor
- * @sibling: (allow none): a #ClutterActor or %NULL
+ * @sibling: (allow-none): a #ClutterActor or %NULL
* @first_property: the name of the first property to set, or %NULL
* @Varargs: a list of property name and value pairs, terminated by %NULL
*