diff --git a/clutter/clutter-clone.c b/clutter/clutter-clone.c
index b1812d5a7..c0c4ee39f 100644
--- a/clutter/clutter-clone.c
+++ b/clutter/clutter-clone.c
@@ -199,7 +199,7 @@ clutter_clone_paint (ClutterActor *self)
   _clutter_actor_set_in_clone_paint (priv->clone_source, FALSE);
 }
 
-gboolean
+static gboolean
 clutter_clone_get_paint_volume (ClutterActor *self,
                                 ClutterPaintVolume *volume)
 {