diff --git a/app/src/main/java/cn/settile/fanboxviewer/Network/RESTfulClient/FanboxUserParser.java b/app/src/main/java/cn/settile/fanboxviewer/Network/RESTfulClient/FanboxUserParser.java
index 1594e45..2b59177 100644
--- a/app/src/main/java/cn/settile/fanboxviewer/Network/RESTfulClient/FanboxUserParser.java
+++ b/app/src/main/java/cn/settile/fanboxviewer/Network/RESTfulClient/FanboxUserParser.java
@@ -106,7 +106,7 @@ public List<DetailItem> getPostContent(String id) throws Exception{
     public List<DetailItem> getPostContent(JSONObject body) throws Exception{
         List<DetailItem> items = new ArrayList<>();
 
-        if(!body.getString("feeRequired").equals("null")){
+        if(body.getBoolean("isRestricted")){
             items.add(new DetailItem(DetailItem.Type.TEXT,
                     String.format(c.getString(R.string.plan_formatting), body.getInt("feeRequired"))));
             items.add(new DetailItem(DetailItem.Type.IMAGE, "false"));