diff --git a/packages/backend/test/misc/mock-resolver.ts b/packages/backend/test/misc/mock-resolver.ts
index ba89ac329..75b80e98c 100644
--- a/packages/backend/test/misc/mock-resolver.ts
+++ b/packages/backend/test/misc/mock-resolver.ts
@@ -1,4 +1,4 @@
-import Resolver from '../../src/remote/activitypub/resolver.js';
+import { Resolver } from '../../src/remote/activitypub/resolver.js';
 import { IObject } from '../../src/remote/activitypub/type.js';
 
 type MockResponse = {