diff --git a/app/fetch_events.ts b/app/fetch_events.ts
index f7599f6156dcd206fba3a6d45e37a423ea906473..3b0ec8fd68dd08c992bd76cb9e640dc466f2e4f0 100644
--- a/app/fetch_events.ts
+++ b/app/fetch_events.ts
@@ -14,7 +14,7 @@ export type HoliEventLocation = {
 
 export type HoliEventDetails = {
   description: string
-  externalLink: string
+  externalLink?: string
   meetingLink?: string
 }