diff --git a/frontend/src/lib/components/AnnotationLayer.svelte b/frontend/src/lib/components/AnnotationLayer.svelte
index e4c911c2..f2e3a993 100644
--- a/frontend/src/lib/components/AnnotationLayer.svelte
+++ b/frontend/src/lib/components/AnnotationLayer.svelte
@@ -120,6 +120,7 @@ const containerStyle = $derived(
 			data-annotation
 			role="button"
 			tabindex="0"
+			aria-label="Kommentare anzeigen"
 			onclick={() => onAnnotationClick?.(annotation.id)}
 			onkeydown={(e) => { if (e.key === 'Enter' || e.key === ' ') onAnnotationClick?.(annotation.id); }}
 			onmouseenter={() => (hoveredId = annotation.id)}
diff --git a/frontend/src/routes/documents/[id]/+page.server.ts b/frontend/src/routes/documents/[id]/+page.server.ts
index dce5f89f..01777b9a 100644
--- a/frontend/src/routes/documents/[id]/+page.server.ts
+++ b/frontend/src/routes/documents/[id]/+page.server.ts
@@ -10,7 +10,7 @@ export async function load({ params, fetch }) {
 
 	const [docResult, commentsRes] = await Promise.all([
 		api.GET('/api/documents/{id}', { params: { path: { id } } }),
-		fetch(`${base}/api/documents/${id}/comments`)
+		fetch(`${base}/api/documents/${id}/comments`).catch(() => null)
 	]);
 
 	if (docResult.response.status === 401) throw redirect(302, '/login');
@@ -20,7 +20,14 @@ export async function load({ params, fetch }) {
 		throw error(docResult.response.status, getErrorMessage(code));
 	}
 
-	const comments = commentsRes.ok ? await commentsRes.json() : [];
+	let comments: unknown[] = [];
+	if (commentsRes?.ok) {
+		try {
+			comments = await commentsRes.json();
+		} catch {
+			// ignore invalid response
+		}
+	}
 
 	return { document: docResult.data!, comments };
 }