diff --git a/server/gameserver/bullet.cc b/server/gameserver/bullet.cc
index 02721a8..da36d76 100644
--- a/server/gameserver/bullet.cc
+++ b/server/gameserver/bullet.cc
@@ -313,15 +313,13 @@ void Bullet::Check(float distance)
         std::set<ColliderComponent*> colliders;
         room->map_service->GetColliders(room, GetX(), GetY(), colliders);
         for (ColliderComponent* collider : colliders) {
-            if (TestCollision(room, collider) &&
-                !a8::HasBitFlag(collider->tag, kHalfWallTag)) {
-                if (collider->owner->IsEntityType(ET_Obstacle)) {
-                    Obstacle* obstacle = (Obstacle*)collider->owner;
-                    if (obstacle->CanThroughable(this)) {
-                        continue;
+            if (collider->owner->IsEntityType(ET_Obstacle)) {
+                Obstacle* obstacle = (Obstacle*)collider->owner;
+                if (!obstacle->CanThroughable(this)) {
+                    if (TestCollision(room, collider)) {
+                        objects.insert(collider->owner);
                     }
                 }
-                objects.insert(collider->owner);
             }
         }
     }