diff --git a/app/reducers/userInfo.jsx b/app/reducers/userInfo.jsx
index 2c2175e..b888c89 100644
--- a/app/reducers/userInfo.jsx
+++ b/app/reducers/userInfo.jsx
@@ -3,10 +3,9 @@ const initState = {};
 export default function userInfo(state = initState, action) {
     switch (action.type) {
         case 'USERINFO_UPDATE_CITYNAME':
-            return {
-                ...state,
+        	return Object.assign({}, state, {
                 cityName: action.cityName
-            };
+        	})
         default:
             return state;
     }