diff --git a/tests/helpers/changeExtensionTooltip.spec.js b/tests/helpers/changeExtensionTooltip.spec.js
index da67f24..6bbb665 100644
--- a/tests/helpers/changeExtensionTooltip.spec.js
+++ b/tests/helpers/changeExtensionTooltip.spec.js
@@ -1,4 +1,6 @@
 var chai = require('chai');
+var sinon = require('sinon');
+var chrome = require('sinon-chrome');
 var expect = chai.expect;
 
 import changeExtensionTooltip from '../../assets/js/helpers/changeExtensionTooltip';
@@ -7,4 +9,10 @@ describe('changeExtensionTooltip', function() {
     it('should be a function', function() {
         expect(changeExtensionTooltip).to.be.a('function');
     });
+
+    it('should change the extension tooltip', function() {
+        changeExtensionTooltip('WakaTime');
+
+        sinon.assert.calledWithMatch(chrome.browserAction.setTitle, {title: 'WakaTime'});
+    });
 });
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