diff --git a/frontend/svelte.config.js b/frontend/svelte.config.js
index ca42a340..e94e293c 100644
--- a/frontend/svelte.config.js
+++ b/frontend/svelte.config.js
@@ -8,7 +8,17 @@ const config = {
 	preprocess: vitePreprocess(),
 	kit: {
 		adapter: adapter(),
-		prerender: { entries: ['/hilfe/transkription'] }
+		prerender: {
+			entries: ['/hilfe/transkription'],
+			// Disable crawl: by default SvelteKit follows nav links from
+			// prerendered pages and prerenders the targets too. The targets
+			// (/, /documents, /persons, …) throw redirect('/login') during
+			// the build (no auth cookie), so SvelteKit bakes a
+			// `<script>location.href='/login'</script>` HTML page and serves
+			// it before the runtime hooks ever run. Result: authenticated
+			// users with a valid cookie still get bounced. See #514.
+			crawl: false
+		}
 	}
 };