diff --git a/Assets/Scripts/Ally/AllyUpgrade.cs b/Assets/Scripts/Ally/AllyUpgrade.cs
index 17f127e..dfdd8b9 100644
--- a/Assets/Scripts/Ally/AllyUpgrade.cs
+++ b/Assets/Scripts/Ally/AllyUpgrade.cs
@@ -1,4 +1,3 @@
-using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.EventSystems;
@@ -31,7 +30,7 @@ public class AllyUpgrade : MonoBehaviour, IPointerClickHandler
                         AssignUpgrades(canvas);
                     }
                 }
-                
+
             }
             else
             {
@@ -53,4 +52,13 @@ public class AllyUpgrade : MonoBehaviour, IPointerClickHandler
                 button.Initialize(_upgradeList[i], gameObject, canvas);
             }
         }
-    }}
+    }
+
+    private void OnDestroy()
+    {
+        if (_instance != null)
+        {
+            Destroy(_instance);
+        }
+    }
+}