diff --git a/server/gameserver/app.cc b/server/gameserver/app.cc
index a8cf15f..bf14802 100755
--- a/server/gameserver/app.cc
+++ b/server/gameserver/app.cc
@@ -255,14 +255,10 @@ void App::UnInit()
 
     FreeSocketMsgQueue();
     FreeIMMsgQueue();
-    delete im_msg_mutex_;
-    im_msg_mutex_ = nullptr;
-    delete msg_mutex_;
-    msg_mutex_ = nullptr;
-    delete loop_cond_;
-    loop_cond_ = nullptr;
-    delete loop_mutex_;
-    loop_mutex_ = nullptr;
+    A8_SAFE_DELETE(im_msg_mutex_);
+    A8_SAFE_DELETE(msg_mutex_);
+    A8_SAFE_DELETE(loop_cond_);
+    A8_SAFE_DELETE(loop_mutex_);
 }
 
 int App::Run()