diff --git a/server/masterserver/jsondatamgr.cc b/server/masterserver/jsondatamgr.cc
index 1d72292..ee1afbd 100644
--- a/server/masterserver/jsondatamgr.cc
+++ b/server/masterserver/jsondatamgr.cc
@@ -23,9 +23,11 @@ void JsonDataMgr::UnInit()
 
 std::shared_ptr<a8::XObject> JsonDataMgr::GetConf()
 {
-    if (f8::App::Instance()->GetInstanceId() < 1 ||
-        f8::App::Instance()->GetInstanceId() > masterserver_cluster_json_.Size()) {
-        abort();
+    for (int i = 0; i < masterserver_cluster_json_.Size(); ++i) {
+        auto conf = masterserver_cluster_json_.At(i);
+        if (conf->At("instance_id")->AsXValue().GetInt() == f8::App::Instance()->GetInstanceId()) {
+            return conf;
+        }
     }
-    return masterserver_cluster_json_[f8::App::Instance()->GetInstanceId() - 1];
+    A8_ABORT();
 }