diff --git a/app/api/calendar/route.ts b/app/api/calendar/route.ts
index 2d79d6e1..c8cfa893 100644
--- a/app/api/calendar/route.ts
+++ b/app/api/calendar/route.ts
@@ -90,6 +90,7 @@ export async function POST(req: Request) {
         isAllDay: data.allDay || false,
         location: location || null,
         calendarId,
+        userId: session.user.id,
       },
     });