@@ 1578,8 1578,9 @@ maximizenotify(struct wl_listener *listener, void *data)
* protocol version
* wlr_xdg_surface_schedule_configure() is used to send an empty reply. */
Client *c = wl_container_of(listener, c, maximize);
- if (wl_resource_get_version(c->surface.xdg->toplevel->resource)
- < XDG_TOPLEVEL_WM_CAPABILITIES_SINCE_VERSION)
+ if (c->surface.xdg->initialized
+ && wl_resource_get_version(c->surface.xdg->toplevel->resource)
+ < XDG_TOPLEVEL_WM_CAPABILITIES_SINCE_VERSION)
wlr_xdg_surface_schedule_configure(c->surface.xdg);
}