diff --git a/Gameton-06/Assets/Gameton/Scripts/UI/IngameUI.cs b/Gameton-06/Assets/Gameton/Scripts/UI/IngameUI.cs
index d5078d64..ebe761a9 100644
--- a/Gameton-06/Assets/Gameton/Scripts/UI/IngameUI.cs
+++ b/Gameton-06/Assets/Gameton/Scripts/UI/IngameUI.cs
@@ -2,7 +2,6 @@ using System.Collections;
 using System.Collections.Generic;
 using TMPro;
 using UnityEngine;
-using UnityEngine.Assertions;
 using UnityEngine.UI;
 
 namespace TON
diff --git a/Gameton-06/Assets/Gameton/Scripts/UI/LobbyUI.cs b/Gameton-06/Assets/Gameton/Scripts/UI/LobbyUI.cs
index a32350f4..c0f2d4f3 100644
--- a/Gameton-06/Assets/Gameton/Scripts/UI/LobbyUI.cs
+++ b/Gameton-06/Assets/Gameton/Scripts/UI/LobbyUI.cs
@@ -2,7 +2,6 @@ using System.Collections;
 using System.Collections.Generic;
 using TMPro;
 using UnityEngine;
-using UnityEngine.Assertions;
 using UnityEngine.EventSystems;
 using UnityEngine.UI;
 
diff --git a/Gameton-06/Assets/Gameton/Scripts/UI/SkillSettingUI.cs b/Gameton-06/Assets/Gameton/Scripts/UI/SkillSettingUI.cs
index 7a1aa87d..993a1955 100644
--- a/Gameton-06/Assets/Gameton/Scripts/UI/SkillSettingUI.cs
+++ b/Gameton-06/Assets/Gameton/Scripts/UI/SkillSettingUI.cs
@@ -1,8 +1,6 @@
 using System.Collections;
 using System.Collections.Generic;
-using UnityEditor.PackageManager;
 using UnityEngine;
-using UnityEngine.Assertions;
 using UnityEngine.EventSystems;
 using UnityEngine.UI;