diff --git a/packages/backend/src/server/FileServerService.ts b/packages/backend/src/server/FileServerService.ts
index 11721263d..e82ef64dc 100644
--- a/packages/backend/src/server/FileServerService.ts
+++ b/packages/backend/src/server/FileServerService.ts
@@ -61,6 +61,7 @@ export class FileServerService {
 	public createServer(fastify: FastifyInstance, options: FastifyPluginOptions, done: (err?: Error) => void) {
 		fastify.addHook('onRequest', (request, reply, done) => {
 			reply.header('Content-Security-Policy', 'default-src \'none\'; img-src \'self\'; media-src \'self\'; style-src \'unsafe-inline\'');
+			reply.header('Access-Control-Allow-Origin', '*');
 			done();
 		});