diff --git a/spec/styleguide-spec.js b/spec/styleguide-spec.js
index 74f751c..7e7ff0c 100644
--- a/spec/styleguide-spec.js
+++ b/spec/styleguide-spec.js
@@ -14,5 +14,20 @@ describe('Style Guide', () => {
     it('opens the style guide', () => {
       expect(styleGuideView.element.textContent).toContain('Styleguide')
     })
+
+    describe('example HTML code blocks', () => {
+      beforeEach(async () => {
+        await atom.packages.activatePackage('language-html')
+      })
+
+      it('tokenizes HTML code blocks using language-html', () => {
+        const examples = styleGuideView.element.querySelectorAll('.example-html')
+        expect(examples.length).toBeGreaterThan(0)
+
+        for (const example of examples) {
+          expect(example.querySelectorAll('.line .syntax--text.syntax--html.syntax--basic').length).toBeGreaterThan(0)
+        }
+      })
+    })
   })
 })