diff --git a/include/wlr/types/wlr_data_device.h b/include/wlr/types/wlr_data_device.h
index 80d4bc8b..5581373d 100644
--- a/include/wlr/types/wlr_data_device.h
+++ b/include/wlr/types/wlr_data_device.h
@@ -94,6 +94,8 @@ struct wlr_drag_icon {
 
 	struct wl_listener surface_destroy;
 	struct wl_listener seat_client_destroy;
+
+	void *data;
 };
 
 struct wlr_drag {