diff --git a/functions/src/functions/cron/donation-certificates/index.ts b/functions/src/functions/cron/donation-certificates/index.ts
index e2714d4c6..acb9ae406 100644
--- a/functions/src/functions/cron/donation-certificates/index.ts
+++ b/functions/src/functions/cron/donation-certificates/index.ts
@@ -5,6 +5,6 @@ import { createDonationCertificates } from '../../../lib/donation-certificates';
 
 export default onSchedule({ schedule: '0 0 2 1 *', memory: '4GiB' }, async () => {
 	const now = DateTime.now();
-	const msg = await createDonationCertificates({ year: now.year });
+	const msg = await createDonationCertificates({ year: now.year - 1 });
 	logger.info(msg);
 });
diff --git a/functions/src/functions/webhooks/admin/donation-certificates/index.ts b/functions/src/functions/webhooks/admin/donation-certificates/index.ts
index 03848db91..21e372b58 100644
--- a/functions/src/functions/webhooks/admin/donation-certificates/index.ts
+++ b/functions/src/functions/webhooks/admin/donation-certificates/index.ts
@@ -2,9 +2,15 @@ import { onCall } from 'firebase-functions/v2/https';
 import { FirestoreAdmin } from '../../../../../../shared/src/firebase/admin/FirestoreAdmin';
 import { createDonationCertificates, CreateDonationCertificatesProps } from '../../../../lib/donation-certificates';
 
-export default onCall<CreateDonationCertificatesProps, Promise<string>>({ memory: '4GiB' }, async (request) => {
-	const firestoreAdmin = new FirestoreAdmin();
-	await firestoreAdmin.assertGlobalAdmin(request.auth?.token?.email);
+export default onCall<CreateDonationCertificatesProps, Promise<string>>(
+	{
+		memory: '4GiB',
+		cors: true,
+	},
+	async (request) => {
+		const firestoreAdmin = new FirestoreAdmin();
+		await firestoreAdmin.assertGlobalAdmin(request.auth?.token?.email);
 
-	return await createDonationCertificates(request.data);
-});
+		return await createDonationCertificates(request.data);
+	},
+);