diff --git a/.travis.yml b/.travis.yml
index 0a6f27b..c8d60f2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,4 +4,5 @@ node_js:
   - "8.4.0"
 script:
 - npm run lint
+- npm build
 - npm test
diff --git a/test/acceptance/test-list-of-ua.js b/test/acceptance/test-list-of-ua.js
index e050b65..996651b 100644
--- a/test/acceptance/test-list-of-ua.js
+++ b/test/acceptance/test-list-of-ua.js
@@ -2,6 +2,7 @@ import test from 'ava';
 import yaml from 'yamljs';
 import path from 'path';
 import Bowser from '../../src/bowser';
+import BowserBuild from '../../es5';
 
 const listOfUA = yaml.load(path.join(__dirname, 'useragentstrings.yml'));
 
@@ -11,7 +12,9 @@ browserNames.forEach((browserName) => {
   listOfUA[browserName].forEach((browser) => {
     test('Check all the test browsers', (t) => {
       const parsed = Bowser.parse(browser.ua);
+      const parsedBuild = BowserBuild.parse(browser.ua);
       t.deepEqual(parsed, browser.spec, `${browser.ua}`);
+      t.deepEqual(parsedBuild, browser.spec, `${browser.ua}`);
       t.is(parsed.browser.name, browserName, `${browser.ua}`);
     });
   });