diff --git a/hw/xwayland/xwayland-output.c b/hw/xwayland/xwayland-output.c
index fe7a9232e..f26fb5a4f 100644
--- a/hw/xwayland/xwayland-output.c
+++ b/hw/xwayland/xwayland-output.c
@@ -601,6 +601,7 @@ static void
 apply_output_change(struct xwl_output *xwl_output)
 {
     struct xwl_screen *xwl_screen = xwl_output->xwl_screen;
+    struct xwl_window *xwl_window;
     struct xwl_output *it;
     int mode_width, mode_height, count;
     int width = 0, height = 0, has_this_output = 0;
@@ -658,6 +659,15 @@ apply_output_change(struct xwl_output *xwl_output)
         update_screen_size(xwl_screen, width, height);
     else
         RRTellChanged(xwl_screen->screen);
+
+    /* If running rootful and fullscreen, make sure to match the new setup */
+    if (xwl_screen->fullscreen) {
+        /* The root window may not yet be created */
+        if (xwl_screen->screen->root) {
+            xwl_window = xwl_window_get(xwl_screen->screen->root);
+            xwl_window_rootful_update_fullscreen(xwl_window, xwl_output);
+        }
+    }
 }
 
 static void