diff --git a/server/gameserver/bullet.cc b/server/gameserver/bullet.cc
index 218e7d9..dde4f86 100644
--- a/server/gameserver/bullet.cc
+++ b/server/gameserver/bullet.cc
@@ -362,12 +362,18 @@ void Bullet::Check(float distance)
                  if (c != sender.Get() && !c->dead && TestCollision(room, &aabb_box)) {
                      if (meta->i->_inventory_slot() == IS_C4) {
                          if (!c->IsHuman()) {
-                             ++c_hit_num;
                              objects.insert(c);
+                             if (gun_meta->i->ispenetrate()) {
+                                 ++c_hit_num;
+                                 hit_objects_.insert(c->GetUniId());
+                             }
                          }
                      } else {
-                         ++c_hit_num;
                          objects.insert(c);
+                         if (gun_meta->i->ispenetrate()) {
+                             ++c_hit_num;
+                             hit_objects_.insert(c->GetUniId());
+                         }
                      }
                  }
              }
@@ -385,8 +391,11 @@ void Bullet::Check(float distance)
                 }
                 if (!obstacle->CanThroughable(this)) {
                     if (TestCollision(room, collider)) {
-                        ++t_hit_num;
                         objects.insert(collider->owner);
+                         if (gun_meta->i->is_penetrate_thing()) {
+                             ++t_hit_num;
+                             hit_objects_.insert(collider->owner->GetUniId());
+                         }
                     }
                 }
             }