diff --git a/docs/guides/testing-async-components.md b/docs/guides/testing-async-components.md
index d9bcb9bf4..e62b09bf6 100644
--- a/docs/guides/testing-async-components.md
+++ b/docs/guides/testing-async-components.md
@@ -16,6 +16,12 @@ In practice, this means you have to use `Vue.nextTick()` to wait until Vue has p
 The easiest way to use `Vue.nextTick()` is to write your tests in an async function:
 
 ```js
+// import Vue at the top of file
+import Vue from 'vue'
+
+// other code snippet...
+
+// inside test-suite, add this test case
 it('button click should increment the count text', async () => {
   expect(wrapper.text()).toContain('0')
   const button = wrapper.find('button')