diff --git a/src/client/index.js b/src/client/index.js
index 7742e77..f1e5f81 100644
--- a/src/client/index.js
+++ b/src/client/index.js
@@ -1,5 +1,7 @@
 'use strict';
-window.__REACT_DEVTOOLS_GLOBAL_HOOK__ = {};
+if (!window.__REACT_DEVTOOLS_GLOBAL_HOOK__) {
+  window.__REACT_DEVTOOLS_GLOBAL_HOOK__ = {};
+}
 
 const App = require('./components/app.js');
 const React = require('react');