diff --git a/server/gameserver/bullet.cc b/server/gameserver/bullet.cc
index 1b6fb031..25b1fef2 100644
--- a/server/gameserver/bullet.cc
+++ b/server/gameserver/bullet.cc
@@ -875,14 +875,17 @@ void Bullet::ProcFlyHook(Entity* target)
                 buff_uniids.push_back(buff_uniid);
             }
         }
+        CreatureWeakPtr sender_bk = sender;
         int ok_buff_id = gun_meta->int_param1;
         c->AutoNavigation(born_pos, gun_meta->i->bullet_speed() * 2,
-                          [buff_uniids, ok_buff_id] (Creature* c)
+                          [buff_uniids, ok_buff_id, sender_bk] (Creature* c) mutable
                           {
                               for (int buff_uniid : buff_uniids) {
                                   c->RemoveBuffByUniId(buff_uniid);
                               }
-                              int buff_uniid = c->TryAddBuff(c, ok_buff_id);
+                              if (sender_bk.Get()) {
+                                  int buff_uniid = sender_bk.Get()->TryAddBuff(sender_bk.Get(), ok_buff_id);
+                              }
                           }
                           );
     } else {