diff --git a/server/gameserver/bullet.cc b/server/gameserver/bullet.cc
index d927200..85431d9 100644
--- a/server/gameserver/bullet.cc
+++ b/server/gameserver/bullet.cc
@@ -88,8 +88,8 @@ void Bullet::OnHit(std::vector<Entity*>& objects)
             {
                 Obstacle* obstacle = (Obstacle*)target;
                 if (!obstacle->dead && obstacle->meta->i->attack_type() == 1) {
-                    obstacle->health = std::min(0.0f, obstacle->health - 10);
-                    obstacle->dead = std::min(obstacle->health, 0.001f) <= 0.01f;
+                    obstacle->health = std::max(0.0f, obstacle->health - 10);
+                    obstacle->dead = obstacle->health <= 0.01f;
                     obstacle->dead_frameno = room->frame_no;
                     if (obstacle->dead) {
                         obstacle->ClearColliders();
diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index 3d44e6e..632c565 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -614,6 +614,7 @@ bool Human::HasLiveTeammate()
 void Human::Land()
 {
     a8::UnSetBitFlag(status, HS_Jump);
+    FindLocation();
     SyncAroundPlayers();
 }
 
@@ -635,3 +636,15 @@ void Human::DoJump()
                                                &xtimer_attacher.timer_list_);
     }
 }
+
+void Human::FindLocation()
+{
+    {
+        std::vector<Entity*> objects;
+        int detection_flags = 0;
+        {
+            a8::SetBitFlag(detection_flags, ET_Building);
+        }
+        room->CollisionDetection(this, detection_flags, objects);
+    }
+}
diff --git a/server/gameserver/human.h b/server/gameserver/human.h
index 22626e1..857371e 100644
--- a/server/gameserver/human.h
+++ b/server/gameserver/human.h
@@ -119,6 +119,7 @@ class Human : public Entity
     bool HasLiveTeammate();
     void Land();
     void DoJump();
+    void FindLocation();
 
 protected: