diff --git a/server/gameserver/buff/hide.cc b/server/gameserver/buff/hide.cc
index cad1eb3b..045e950d 100644
--- a/server/gameserver/buff/hide.cc
+++ b/server/gameserver/buff/hide.cc
@@ -5,6 +5,8 @@
 #include "creature.h"
 #include "room.h"
 #include "trigger.h"
+#include "collision.h"
+#include "human.h"
 
 #include "mt/Buff.h"
 #include "mt/Skill.h"
@@ -22,6 +24,10 @@ void HideBuff::Activate()
              (int event, const a8::Args* args) mutable
              {
                  if (a8::TIMER_EXEC_EVENT == event) {
+                     Human* hum = nullptr;
+                     if (Collision::CheckCC(owner, owner->GetRadius(),
+                                            hum, alert_range)) {
+                     }
                  }
              },
              &xtimer_attacher
diff --git a/server/gameserver/buff/hide.h b/server/gameserver/buff/hide.h
index d35d4331..fcd5affd 100644
--- a/server/gameserver/buff/hide.h
+++ b/server/gameserver/buff/hide.h
@@ -9,4 +9,7 @@ class HideBuff : public Buff
     virtual void Activate() override;
     virtual void Deactivate() override;
 
+ private:
+    std::map<int, std::tuple<CreatureWeakPtr, long long, int>> alert_buff_hash_;
+
 };