diff --git a/server/gameserver/roommgr.cc b/server/gameserver/roommgr.cc
index 9ec652d..c18c9fd 100644
--- a/server/gameserver/roommgr.cc
+++ b/server/gameserver/roommgr.cc
@@ -215,7 +215,7 @@ void RoomMgr::ReportServerState(int instance_id, const std::string& host, int po
                                             on_error,
                                             url.c_str(),
                                             *url_params,
-                                            rand()
+                                            rand() % kMAX_SYS_HTTP_NUM
                                             );
     delete url_params;
 }