diff --git a/include/wlr/types/wlr_scene.h b/include/wlr/types/wlr_scene.h
index b5690575..282685a7 100644
--- a/include/wlr/types/wlr_scene.h
+++ b/include/wlr/types/wlr_scene.h
@@ -48,6 +48,8 @@ struct wlr_scene_node {
 	struct {
 		struct wl_signal destroy;
 	} events;
+
+	void *data;
 };
 
 /** The root scene-graph node. */