diff --git a/docs/guide/modules.md b/docs/guide/modules.md
index 5630c8f6e..5723b4060 100644
--- a/docs/guide/modules.md
+++ b/docs/guide/modules.md
@@ -280,6 +280,10 @@ export function createPlugin (options = {}) {
 You can register a module **after** the store has been created with the `store.registerModule` method:
 
 ``` js
+import Vuex from 'vuex'
+
+const store = new Vuex.Store({ /* options */ })
+
 // register a module `myModule`
 store.registerModule('myModule', {
   // ...