diff --git a/server/gameserver/buff/cond_add.cc b/server/gameserver/buff/cond_add.cc
index 34ff3655..9f5e4b88 100644
--- a/server/gameserver/buff/cond_add.cc
+++ b/server/gameserver/buff/cond_add.cc
@@ -232,11 +232,11 @@ void CondAddBuff::ProcLimitTimeKillTarget()
 
     auto holder = std::make_shared<a8::Holder>
         (
-         [this, context] (const a8::Args& args)
+         [owner = owner->GetWeakPtrRef(), context] (const a8::Args& args) mutable
          {
-             if (!owner->room->IsDestorying()) {
+             if (owner.Get() && !owner.Get()->room->IsDestorying()) {
                  for (auto& pair : context->watch_targets) {
-                     owner->GetTrigger()->RemoveEventHandler(std::get<1>(pair.second));
+                     owner.Get()->GetTrigger()->RemoveEventHandler(std::get<1>(pair.second));
                  }
              }
          });