diff --git a/include/wlr/xwayland/xwayland.h b/include/wlr/xwayland/xwayland.h
index cb9e35f0..ff08796c 100644
--- a/include/wlr/xwayland/xwayland.h
+++ b/include/wlr/xwayland/xwayland.h
@@ -169,6 +169,8 @@ struct wlr_xwayland_surface {
 		struct wl_signal set_strut_partial;
 		struct wl_signal set_override_redirect;
 		struct wl_signal set_geometry;
+		/* can be used to set initial maximized/fullscreen geometry */
+		struct wl_signal map_request;
 		struct wl_signal ping_timeout;
 	} events;
 
diff --git a/xwayland/xwm.c b/xwayland/xwm.c
index 2f80062a..6322b859 100644
--- a/xwayland/xwm.c
+++ b/xwayland/xwm.c
@@ -218,8 +218,9 @@ static struct wlr_xwayland_surface *xwayland_surface_create(
 	wl_signal_init(&surface->events.set_decorations);
 	wl_signal_init(&surface->events.set_strut_partial);
 	wl_signal_init(&surface->events.set_override_redirect);
-	wl_signal_init(&surface->events.ping_timeout);
 	wl_signal_init(&surface->events.set_geometry);
+	wl_signal_init(&surface->events.map_request);
+	wl_signal_init(&surface->events.ping_timeout);
 
 	xcb_get_geometry_reply_t *geometry_reply =
 		xcb_get_geometry_reply(xwm->xcb_conn, geometry_cookie, NULL);
@@ -1123,6 +1124,7 @@ static void xwm_handle_map_request(struct wlr_xwm *xwm,
 		return;
 	}
 
+	wl_signal_emit_mutable(&xsurface->events.map_request, NULL);
 	xcb_map_window(xwm->xcb_conn, ev->window);
 }