diff --git a/backend/src/routes/staff/time.ts b/backend/src/routes/staff/time.ts
index 75afdb4..7232795 100644
--- a/backend/src/routes/staff/time.ts
+++ b/backend/src/routes/staff/time.ts
@@ -124,6 +124,7 @@ export default async function staffTimeRoutes(server: FastifyInstance) {
                     eventtype: "invalidated",
                     source: "WEB",
                     related_event_id: id,
+                    invalidates_event_id: id,
                     metadata: {
                         reason: reason || "Bearbeitung",
                         replaced_by_edit: true