diff --git a/packages/backend/test/unit/activitypub.ts b/packages/backend/test/unit/activitypub.ts
index 456a476c16..8f1e792829 100644
--- a/packages/backend/test/unit/activitypub.ts
+++ b/packages/backend/test/unit/activitypub.ts
@@ -32,7 +32,6 @@ import { IdService } from '@/core/IdService.js';
 import { MockResolver } from '../misc/mock-resolver.js';
 import { UserKeypairService } from '@/core/UserKeypairService.js';
 import { MemoryKVCache, RedisKVCache } from '@/misc/cache.js';
-import { IdService } from '@/core/IdService.js';
 
 const host = 'https://host1.test';