diff --git a/packages/backend/src/server/web/UrlPreviewService.ts b/packages/backend/src/server/web/UrlPreviewService.ts
index a9be094ce7..8c1776568b 100644
--- a/packages/backend/src/server/web/UrlPreviewService.ts
+++ b/packages/backend/src/server/web/UrlPreviewService.ts
@@ -67,7 +67,7 @@ export class UrlPreviewService {
 
 	@bindThis
 	public async handle(
-		request: FastifyRequest<{ Querystring: { url: string; lang?: string; } }>,
+		request: FastifyRequest<{ Querystring: { url?: string; lang?: string; } }>,
 		reply: FastifyReply,
 	): Promise<object | undefined> {
 		const url = request.query.url;