diff --git a/lib/resource.js b/lib/resource.js
index 0139d73..49f2f7c 100644
--- a/lib/resource.js
+++ b/lib/resource.js
@@ -141,7 +141,7 @@ class Resource {
           bodyInject.push(this.createScriptSrcTag(url));
         });
         if (this.isInjectInlineResouce() && !/window.__INITIAL_STATE__/.test(html)) {
-          bodyInject.unshift(`<script> window.__INITIAL_STATE__= ${serialize(locals.state || locals, { isJSON: true })};</script>`);
+          bodyInject.unshift(`<script> window.__INITIAL_STATE__= JSON.parse('${serialize(locals.state || locals, { isJSON: true })}');</script>`);
         }
       }
       this.injectHead(headInject);