Make 'services' tab recognize OpenNTP as NTP daemon

Hi! For various reasons (which would go beyond the scope) I replaced the default ntpd service with OpenBSD's OpenNTP (apt-get install openntpd). I am happy and no fallouts to deal with. However, the 'services' tab of the Proxmox GUI now shows NTP to be down, naturally. Where is this list parsed from? I'd be curious if one could help the GUI to recognize OpenNTP as NTP service. Ideally, the GUI could even look for either of these daemons to get satisfied?

Thanks you!
Stephan