xscreensaver systemd user service init : wait for DISPLAY

I have xscreensaver running as a user service and see that often it fails to start. The status shows DISPLAY not set. I've changed the service definition to now retry and that seems to be working [Unit] Description=XScreenSaver StartLimitInterval=200 StartLimitBurst=5 [Service] ExecStart=/usr/local/bin/xscreensaver -nosplash Restart=always RestartSec=30 [Install] WantedBy=default.target Is there a better way to do this? My guess is that because this is a user service it is starting sometimes before the user environment is fully set. Ideally the start would wait for DISPLAY to be set. The restart strategy seems crude but perhaps that's the best I can do.