diff --git a/test/mocha/fixtures/browser/errors.spec.js b/test/mocha/fixtures/browser/errors.spec.js
index 6d6e84e..0f40bea 100644
--- a/test/mocha/fixtures/browser/errors.spec.js
+++ b/test/mocha/fixtures/browser/errors.spec.js
@@ -1,4 +1,4 @@
-import { expect } from 'chai';
+import { expect } from 'chai'; // expect can be imported explicitly
 
 describe.only('calculate', function() { // eslint-disable-line mocha/no-exclusive-tests
 
diff --git a/test/mocha/fixtures/browser/no-errors.spec.js b/test/mocha/fixtures/browser/no-errors.spec.js
index 895c015..bab2e88 100644
--- a/test/mocha/fixtures/browser/no-errors.spec.js
+++ b/test/mocha/fixtures/browser/no-errors.spec.js
@@ -1,4 +1,4 @@
-import { expect } from 'chai';
+import { expect } from 'chai'; // expect can be imported explicitly
 
 describe('calculate', function() {
 
diff --git a/test/mocha/fixtures/node/errors.spec.js b/test/mocha/fixtures/node/errors.spec.js
index f3304ae..22583a9 100644
--- a/test/mocha/fixtures/node/errors.spec.js
+++ b/test/mocha/fixtures/node/errors.spec.js
@@ -1,4 +1,4 @@
-const { expect } = require('chai');
+const { expect } = require('chai'); // expect can be imported explicitly
 
 describe.only('calculate', function() { // eslint-disable-line mocha/no-exclusive-tests
 
diff --git a/test/mocha/fixtures/node/no-errors.spec.js b/test/mocha/fixtures/node/no-errors.spec.js
index e4423d5..b6729a2 100644
--- a/test/mocha/fixtures/node/no-errors.spec.js
+++ b/test/mocha/fixtures/node/no-errors.spec.js
@@ -1,4 +1,4 @@
-const { expect } = require('chai');
+const { expect } = require('chai'); // expect can be imported explicitly
 
 describe('calculate', function() {