diff --git a/clutter/clutter/clutter-actor.c b/clutter/clutter/clutter-actor.c
index 0a0884415..7aac4ab84 100644
--- a/clutter/clutter/clutter-actor.c
+++ b/clutter/clutter/clutter-actor.c
@@ -19533,6 +19533,23 @@ clutter_actor_invalidate_transform (ClutterActor *self)
   transform_changed (self);
 }
 
+/**
+ * clutter_actor_invalidate_paint_volume:
+ * @self: A #ClutterActor
+ *
+ * Invalidates the cached paint volume of @self. This is needed for
+ * implementations overriding the #ClutterActorClass.get_paint_volume()
+ * virtual function and has to be called every time the paint volume
+ * returned by that function would change.
+ */
+void
+clutter_actor_invalidate_paint_volume (ClutterActor *self)
+{
+  g_return_if_fail (CLUTTER_IS_ACTOR (self));
+
+  self->priv->needs_paint_volume_update = TRUE;
+}
+
 gboolean
 clutter_actor_get_redraw_clip (ClutterActor       *self,
                                ClutterPaintVolume *dst_old_pv,
diff --git a/clutter/clutter/clutter-actor.h b/clutter/clutter/clutter-actor.h
index 39f96e2d5..10b0a2174 100644
--- a/clutter/clutter/clutter-actor.h
+++ b/clutter/clutter/clutter-actor.h
@@ -931,6 +931,9 @@ GList * clutter_actor_peek_stage_views (ClutterActor *self);
 CLUTTER_EXPORT
 void clutter_actor_invalidate_transform (ClutterActor *self);
 
+CLUTTER_EXPORT
+void clutter_actor_invalidate_paint_volume (ClutterActor *self);
+
 G_END_DECLS
 
 #endif /* __CLUTTER_ACTOR_H__ */