diff --git a/server/gameserver/android.ai.cc b/server/gameserver/android.ai.cc
index 4807c204..29970c84 100644
--- a/server/gameserver/android.ai.cc
+++ b/server/gameserver/android.ai.cc
@@ -466,19 +466,13 @@ void AndroidAI::DoMoveNewAI()
     }
     if (std::abs(hum->GetMoveDir().x) > FLT_EPSILON ||
         std::abs(hum->GetMoveDir().y) > FLT_EPSILON) {
-        hum->on_move_collision =
-            [this] () {
-                ChangeToStateNewAI(ASE_RandomWalk);
-                return false;
-            };
         int speed = std::max(1, (int)hum->GetSpeed()) * 1;
         a8::Vec2 old_pos = hum->GetPos();
         hum->_UpdateMove(speed);
         if (owner->room->IsPveRoom() && IsNearGas()) {
             hum->SetPos(old_pos);
-            hum->on_move_collision();
+            ChangeToStateNewAI(ASE_RandomWalk);
         }
-        hum->on_move_collision = nullptr;
         if (node_->nearest_human.Get()) {
             if (node_->main_state != ASE_Pursuit &&
                 hum->GetPos().ManhattanDistance(node_->nearest_human.Get()->GetPos()) < 200) {
diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index 08ef5960..6e20428c 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -3301,16 +3301,7 @@ void Creature::_UpdateSpecMove()
         move_dir.Normalize();
         SetMoveDir(move_dir);
         bool is_collision = false;
-        std::function<bool ()> old_on_move_collision = on_move_collision;
-        on_move_collision =
-            [&is_collision] () {
-                is_collision = true;
-                return false;
-            };
-
         _UpdateMove(std::min((int)target_distance, (int)GetSpeed()));
-
-        on_move_collision = old_on_move_collision;
         move_dir = old_move_dir;
         target_distance = target_pos.Distance(GetPos());
         if (is_collision || target_distance <= 1.0001f) {
diff --git a/server/gameserver/creature.h b/server/gameserver/creature.h
index c6739a14..4220e3d5 100644
--- a/server/gameserver/creature.h
+++ b/server/gameserver/creature.h
@@ -86,7 +86,6 @@ class Creature : public MoveableEntity
     int shot_hole = 0;
     Creature* shot_passenger = nullptr;
     a8::Vec2 target_pos;
-    std::function<bool ()> on_move_collision;
     bool poisoning = false;
     long long poisoning_time = 0;
     bool playing_skill = false;
diff --git a/server/gameserver/hero.ai.cc b/server/gameserver/hero.ai.cc
index 2f1d4309..d1a9515a 100644
--- a/server/gameserver/hero.ai.cc
+++ b/server/gameserver/hero.ai.cc
@@ -273,33 +273,12 @@ void HeroAI::DoMoveAI()
     }
     if (std::abs(hero->GetMoveDir().x) > FLT_EPSILON ||
         std::abs(hero->GetMoveDir().y) > FLT_EPSILON) {
-        auto old_on_move_collision_func = hero->on_move_collision;
-        hero->on_move_collision =
-            [this] () {
-                if (node_->main_state == HSE_FollowMaster) {
-                    ChangeToStateAI(HSE_FollowMaster);
-                } else {
-                    ChangeToStateAI(HSE_RandomWalk);
-                }
-                return false;
-            };
         int speed = std::max(1, (int)hero->GetSpeed()) * 1;
         a8::Vec2 old_pos = hero->GetPos();
         hero->_UpdateMove(speed);
         if (owner->room->IsPveRoom() && IsNearGas()) {
-#if 1
             hero->SetPos(old_pos);
-            hero->on_move_collision();
-#else
-            //if (hero->room->GetFrameNo() - node_->last_adjust_dir_frameno > SERVER_FRAME_RATE * 3) {
-                a8::Vec2 dir = hero->GetPos() - hero->room->GetGasData().pos_new;
-                hero->SetMoveDir(dir);
-                hero->GetMoveHelper()->CalcTargetPos(500);
-                node_->last_adjust_dir_frameno = hero->room->GetFrameNo();
-                //}
-#endif
         }
-        hero->on_move_collision = old_on_move_collision_func;
     }
 }
 
diff --git a/server/gameserver/hero.cc b/server/gameserver/hero.cc
index 08f38afd..d4182007 100644
--- a/server/gameserver/hero.cc
+++ b/server/gameserver/hero.cc
@@ -180,9 +180,11 @@ void Hero::InternalUpdateMove(float speed)
     if (!CheckCollision()) {
         room->grid_service->MoveCreature(this);
     } else {
+#if 0
         if (on_move_collision && !on_move_collision()) {
             SetPos(old_pos);
         }
+#endif
     }
 }
 
diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index 25f0dce8..67b3e7ba 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -2101,10 +2101,12 @@ void Human::_InternalUpdateMove(float speed)
             SetPos(old_pos);
             return;
         }
+        #if 0
         if (on_move_collision && !on_move_collision()) {
             SetPos(old_pos);
             return;
         }
+        #endif
         nx = 0;
     }
 
@@ -2114,10 +2116,12 @@ void Human::_InternalUpdateMove(float speed)
             SetPos(old_pos);
             return;
         }
+#if 0
         if (on_move_collision && !on_move_collision()) {
             SetPos(old_pos);
             return;
         }
+#endif
         ny = 0;
     }
 
@@ -3552,7 +3556,7 @@ void Human::OnLand()
     if (IsAndroid() && team_uuid.empty()) {
         MustBeAddBuff(this, kBeRecycleBuffId);
     }
-#endif
+    #endif
     if (IsPlayer()) {
         StartRefreshViewTimer();
     }