diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index 201cdafd..a9825ff0 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -1170,6 +1170,13 @@ void Creature::Initialize()
     if (IsHuman()) {
         a8::XTimerWp nature_recover_hp_timer;
         auto battling_state = std::make_shared<bool>(true);
+        GetTrigger()->AddListener
+            (
+             kBattleStartEvent,
+             [battling_state] (const a8::Args& args)
+             {
+                 *battling_state = true;
+             });
         nature_recover_hp_idle_timer = room->xtimer.SetIntervalWpEx
             (
              SERVER_FRAME_RATE * mt::Param::s().nature_recover_hp_idletime,