diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index a905d17..02cb191 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -8,6 +8,7 @@
 #include "skill.h"
 #include "human.h"
 #include "collider.h"
+#include "roomobstacle.h"
 
 void InternalShot(Creature* c,
                   MetaData::Equip* weapon_meta,
@@ -1203,3 +1204,40 @@ void Creature::CheckSpecObject()
     }
     #endif
 }
+
+RoomObstacle* Creature::SummonObstacle(int id, const a8::Vec2& pos)
+{
+    RoomObstacle* obstacle = room->CreateObstacle(id, pos.x, pos.y);
+    if (obstacle) {
+        obstacle->master.Attach(this);
+        room->xtimer.AddRepeatTimerAndAttach
+            (
+             SERVER_FRAME_RATE,
+             a8::XParams()
+             .SetSender(obstacle),
+             [] (const a8::XParams& param)
+             {
+                 RoomObstacle* obstacle = (RoomObstacle*)param.sender.GetUserData();
+                 obstacle->ActiveTimerFunc();
+             },
+             &obstacle->xtimer_attacher.timer_list_
+             );
+
+        room->xtimer.AddRepeatTimerAndAttach
+            (
+             SERVER_FRAME_RATE,
+             a8::XParams()
+             .SetSender(obstacle),
+             [] (const a8::XParams& param)
+             {
+                 RoomObstacle* obstacle = (RoomObstacle*)param.sender.GetUserData();
+                 obstacle->UpdateTimerFunc();
+             },
+             &obstacle->xtimer_attacher.timer_list_
+             );
+
+    } else {
+        abort();
+    }
+    return obstacle;
+}
diff --git a/server/gameserver/creature.h b/server/gameserver/creature.h
index 3a1a4b2..e62ccb2 100644
--- a/server/gameserver/creature.h
+++ b/server/gameserver/creature.h
@@ -15,6 +15,7 @@ namespace MetaData
 struct xtimer_list;
 class Skill;
 class Obstacle;
+class RoomObstacle;
 class Creature : public MoveableEntity
 {
  public:
@@ -113,6 +114,7 @@ class Creature : public MoveableEntity
     virtual void _UpdateMove(int speed) {};
 
     void CheckSpecObject();
+    RoomObstacle* SummonObstacle(int id, const a8::Vec2& pos);
 
 private:
 
diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index e08c745..c9414a4 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -1878,43 +1878,6 @@ void Human::WinExp(Human* sender, int exp)
     }
 }
 
-RoomObstacle* Human::SummonObstacle(int id, const a8::Vec2& pos)
-{
-    RoomObstacle* obstacle = room->CreateObstacle(id, pos.x, pos.y);
-    if (obstacle) {
-        obstacle->master.Attach(this);
-        room->xtimer.AddRepeatTimerAndAttach
-            (
-             SERVER_FRAME_RATE,
-             a8::XParams()
-             .SetSender(obstacle),
-             [] (const a8::XParams& param)
-             {
-                 RoomObstacle* obstacle = (RoomObstacle*)param.sender.GetUserData();
-                 obstacle->ActiveTimerFunc();
-             },
-             &obstacle->xtimer_attacher.timer_list_
-             );
-
-        room->xtimer.AddRepeatTimerAndAttach
-            (
-             SERVER_FRAME_RATE,
-             a8::XParams()
-             .SetSender(obstacle),
-             [] (const a8::XParams& param)
-             {
-                 RoomObstacle* obstacle = (RoomObstacle*)param.sender.GetUserData();
-                 obstacle->UpdateTimerFunc();
-             },
-             &obstacle->xtimer_attacher.timer_list_
-             );
-
-    } else {
-        abort();
-    }
-    return obstacle;
-}
-
 void Human::_InternalUpdateMove(float speed)
 {
     float nx = move_dir.x * speed;
diff --git a/server/gameserver/human.h b/server/gameserver/human.h
index 960f925..4eca4bf 100644
--- a/server/gameserver/human.h
+++ b/server/gameserver/human.h
@@ -238,7 +238,6 @@ class Human : public Creature
     int GetSeat() { return seat_; }
     void SetSeat(int seat) { seat_ = seat; }
     void DeadDrop();
-    RoomObstacle* SummonObstacle(int id, const a8::Vec2& pos);
     virtual std::string GetName() override { return name;};
 
 protected: