diff --git a/examples/vuejs/basic/src/core/index.js b/examples/vuejs/basic/src/core/index.js
index 8058eefb..d18eb1c0 100644
--- a/examples/vuejs/basic/src/core/index.js
+++ b/examples/vuejs/basic/src/core/index.js
@@ -13,7 +13,7 @@ export default {
   },
   mutations: {
     changeName({ self }, val) {
-      state.name = val;
+      self.name = val;
     },
     changeTheme({ self }, value) {
       self.set("theme", value);