diff --git a/server/wsproxy/master.cc b/server/wsproxy/master.cc
index cbeddb2..1c2fd56 100644
--- a/server/wsproxy/master.cc
+++ b/server/wsproxy/master.cc
@@ -31,17 +31,15 @@ void Master::Init(int instance_id, const std::string& remote_ip, int remote_port
     tcp_client_->on_connect = std::bind(&Master::on_connect, this, std::placeholders::_1);
     tcp_client_->on_disconnect = std::bind(&Master::on_disconnect, this, std::placeholders::_1);
     tcp_client_->on_socketread = std::bind(&Master::on_socketread, this ,std::placeholders::_1, std::placeholders::_2, std::placeholders::_3);
-    timer_wp_ = f8::Timer::Instance()->SetIntervalWp
+    timer_wp_ = f8::Timer::Instance()->SetIntervalWpEx
         (1000 * 9 + a8::RandEx(500, 150),
-         [] (int event, const a8::Args* args)
+         [this] (int event, const a8::Args* args)
          {
              if (a8::TIMER_EXEC_EVENT == event) {
-                 #if 0
-                 Master* conn = (Master*)param.sender.GetUserData();
-                 conn->CheckAlive();
-                 #endif
+                 CheckAlive();
              }
-         });
+         },
+         &attacher_);
 }
 
 void Master::UnInit()