diff --git a/packages/mastoapi/router/DittoRoute.test.ts b/packages/mastoapi/router/DittoRoute.test.ts
index 737019c4..7e48c8e2 100644
--- a/packages/mastoapi/router/DittoRoute.test.ts
+++ b/packages/mastoapi/router/DittoRoute.test.ts
@@ -1,12 +1,15 @@
-import { assertEquals } from '@std/assert';
+import { assertRejects } from '@std/assert';
 
 import { DittoRoute } from './DittoRoute.ts';
 
 Deno.test('DittoRoute', async () => {
   const route = new DittoRoute();
-  const response = await route.request('/');
-  const body = await response.json();
 
-  assertEquals(response.status, 500);
-  assertEquals(body, { error: 'Missing required variable: db' });
+  await assertRejects(
+    async () => {
+      await route.request('/');
+    },
+    Error,
+    'Missing required variable: db',
+  );
 });