diff --git a/src/components/CompetitionPage/UpcomingOrCurrentEventInfo.tsx b/src/components/CompetitionPage/UpcomingOrCurrentEventInfo.tsx
index 830e45ad..e69ba779 100644
--- a/src/components/CompetitionPage/UpcomingOrCurrentEventInfo.tsx
+++ b/src/components/CompetitionPage/UpcomingOrCurrentEventInfo.tsx
@@ -16,17 +16,18 @@ export const UpcomingOrCurrentEventInfo: FC<{event: Event; name: string; shortNa
 
   const upcomingEventDate = event ? formatDateTimeInterval(start, end) : null
 
-  const regStart = DateTime.fromISO(registration_link.start)
-  const regEnd = DateTime.fromISO(registration_link.end)
+  const regStart = registration_link && DateTime.fromISO(registration_link.start)
+  const regEnd = registration_link && DateTime.fromISO(registration_link.end)
   const now = DateTime.now()
 
   const registrationInfo = (() => {
+    if (!regStart || !regEnd) return ''
     if (now < regStart) return `Registrácia bude otvorená od ${regStart.toFormat(DateFormat.DATE_TIME)}`
     if (now < regEnd) return `Registrácia je otvorená do ${regEnd.toFormat(DateFormat.DATE_TIME)}`
     return `Registrácia bola ukončená`
   })()
 
-  const isRegistrationActive = regStart < now && regEnd > now
+  const isRegistrationActive = regStart && regEnd && regStart < now && regEnd > now
 
   return (
     <Stack gap={1}>
diff --git a/src/types/api/competition.ts b/src/types/api/competition.ts
index d5fcc194..9b49660e 100644
--- a/src/types/api/competition.ts
+++ b/src/types/api/competition.ts
@@ -30,7 +30,7 @@ export interface Event {
   can_participate: boolean
   is_registered: boolean
   publication_set: Publication[]
-  registration_link: RegistrationLink
+  registration_link?: RegistrationLink
   location: string | null
   year: number | null
   school_year: string | null