diff --git a/pages/api/cancel.ts b/pages/api/cancel.ts
index 3b879272be..bbaa775e9a 100644
--- a/pages/api/cancel.ts
+++ b/pages/api/cancel.ts
@@ -1,5 +1,6 @@
 import { BookingStatus } from "@prisma/client";
 import async from "async";
+import dayjs from "dayjs";
 import { NextApiRequest, NextApiResponse } from "next";
 
 import { refund } from "@ee/lib/stripe/server";
@@ -98,8 +99,8 @@ export default async function handler(req: NextApiRequest, res: NextApiResponse)
     title: bookingToDelete?.title,
     type: bookingToDelete?.eventType?.title as string,
     description: bookingToDelete?.description || "",
-    startTime: bookingToDelete?.startTime.toISOString(),
-    endTime: bookingToDelete?.endTime.toISOString(),
+    startTime: bookingToDelete?.startTime ? dayjs(bookingToDelete.startTime).format() : "",
+    endTime: bookingToDelete?.endTime ? dayjs(bookingToDelete.endTime).format() : "",
     organizer: {
       email: organizer.email,
       name: organizer.name ?? "Nameless",