diff --git a/server/gameserver/room.cc b/server/gameserver/room.cc
index 6cd93cc..f987897 100644
--- a/server/gameserver/room.cc
+++ b/server/gameserver/room.cc
@@ -62,6 +62,7 @@ void Room::Init()
 
 void Room::UnInit()
 {
+    App::Instance()->perf.alive_count -= alive_count_;
     if (game_over_timer) {
         a8::Timer::Instance()->DeleteTimer(game_over_timer);
         game_over_timer = nullptr;