diff --git a/packages/backend/src/core/activitypub/ApInboxService.ts b/packages/backend/src/core/activitypub/ApInboxService.ts
index e8fd36b468..4157e8a827 100644
--- a/packages/backend/src/core/activitypub/ApInboxService.ts
+++ b/packages/backend/src/core/activitypub/ApInboxService.ts
@@ -8,7 +8,7 @@ import { In } from 'typeorm';
 import { DI } from '@/di-symbols.js';
 import type { Config } from '@/config.js';
 import { UserFollowingService } from '@/core/UserFollowingService.js';
-import { isCustomEmojiRegexp, ReactionService } from '@/core/ReactionService.js';
+import { ReactionService } from '@/core/ReactionService.js';
 import { RelayService } from '@/core/RelayService.js';
 import { NotePiningService } from '@/core/NotePiningService.js';
 import { UserBlockingService } from '@/core/UserBlockingService.js';