diff --git a/src/controllers/activitypub/topics.js b/src/controllers/activitypub/topics.js
index 97574e1031..473dca7a7d 100644
--- a/src/controllers/activitypub/topics.js
+++ b/src/controllers/activitypub/topics.js
@@ -1,7 +1,5 @@
 'use strict';
 
-const _ = require('lodash');
-
 const meta = require('../../meta');
 const user = require('../../user');
 const topics = require('../../topics');