diff --git a/clutter/clutter-actor.c b/clutter/clutter-actor.c
index 5728983a6..793952c24 100644
--- a/clutter/clutter-actor.c
+++ b/clutter/clutter-actor.c
@@ -12516,9 +12516,9 @@ clutter_actor_lower_bottom (ClutterActor *self)
  * Since: 0.6
  */
 gboolean
-clutter_actor_event (ClutterActor *actor,
-                     ClutterEvent *event,
-		     gboolean      capture)
+clutter_actor_event (ClutterActor       *actor,
+                     const ClutterEvent *event,
+		     gboolean            capture)
 {
   gboolean retval = FALSE;
   gint signal_num = -1;
diff --git a/clutter/clutter-actor.h b/clutter/clutter-actor.h
index e98cd5532..d2f78d994 100644
--- a/clutter/clutter-actor.h
+++ b/clutter/clutter-actor.h
@@ -533,7 +533,7 @@ gboolean                        clutter_actor_get_reactive
 gboolean                        clutter_actor_has_key_focus                     (ClutterActor               *self);
 void                            clutter_actor_grab_key_focus                    (ClutterActor               *self);
 gboolean                        clutter_actor_event                             (ClutterActor               *actor,
-                                                                                 ClutterEvent               *event,
+                                                                                 const ClutterEvent         *event,
                                                                                  gboolean                    capture);
 gboolean                        clutter_actor_has_pointer                       (ClutterActor               *self);