diff --git a/test/helpers/query.castUpdate.test.js b/test/helpers/query.castUpdate.test.js
index c458719578d..091c996faab 100644
--- a/test/helpers/query.castUpdate.test.js
+++ b/test/helpers/query.castUpdate.test.js
@@ -5,7 +5,7 @@ const assert = require('assert');
 const castUpdate = require('../../lib/helpers/query/castUpdate');
 
 describe('castUpdate', function() {
-  it('avoids adding `$each` if `$addToSet` on mixed array (gh-11284)', function () {
+  it('avoids adding `$each` if `$addToSet` on mixed array (gh-11284)', function() {
     const schema = new Schema({ test: [] });
     const obj = { $addToSet: { test: [1, 2, 3] } };