diff --git a/src/guide/unit-testing.md b/src/guide/unit-testing.md
index adaf69ec4a..c02d7c9cdb 100644
--- a/src/guide/unit-testing.md
+++ b/src/guide/unit-testing.md
@@ -93,7 +93,7 @@ import MyComponent from './MyComponent.vue'
 
 // helper function that mounts and returns the rendered text
 function getRenderedText (Component, propsData) {
-  const Ctor = Vue.extend(MyComponent)
+  const Ctor = Vue.extend(Component)
   const vm = new Ctor({ propsData }).$mount()
   return vm.$el.textContent
 }