diff --git a/GameServer/Game/Challenge/ChallengeInstance.cs b/GameServer/Game/Challenge/ChallengeInstance.cs
index f210e96c..f8c243c6 100644
--- a/GameServer/Game/Challenge/ChallengeInstance.cs
+++ b/GameServer/Game/Challenge/ChallengeInstance.cs
@@ -201,7 +201,7 @@ public class ChallengeInstance
             {
                 var avatar = Player.AvatarManager?.GetAvatar(lineupAvatar.BaseAvatarId);
                 if (avatar == null) continue;
-                proto.BossInfo.FirstLineup.Add((uint)avatar.GetAvatarId());
+                proto.BossInfo.SecondLineup.Add((uint)avatar.GetAvatarId());
                 var equip = Player.InventoryManager?.GetItem(0, avatar.GetCurPathInfo().EquipId,
                     ItemMainTypeEnum.Equipment);
                 if (equip != null)
@@ -444,4 +444,4 @@ public class ChallengeInstance
     }
 
     #endregion
-}
\ No newline at end of file
+}