diff --git a/src/Core.MoreAccessories/Classes/Maker/Windows/Accessories.cs b/src/Core.MoreAccessories/Classes/Maker/Windows/Accessories.cs
index 86e3dfc..04bb568 100644
--- a/src/Core.MoreAccessories/Classes/Maker/Windows/Accessories.cs
+++ b/src/Core.MoreAccessories/Classes/Maker/Windows/Accessories.cs
@@ -388,7 +388,7 @@ public void UpdateUI()
                     AccessoryTab.textSlotNames = AccessoryTab.textSlotNames.Concat(cvsAccessory.textSlotName).ToArray();
                     newReactive.Subscribe(delegate
                     {
-                        if (index == customBase.selectSlot && index > customBase.actUpdateCvsAccessory.Length)
+                        if (index == customBase.selectSlot && customBase.actUpdateCvsAccessory.Length > index)
                         {
                             customBase.actUpdateCvsAccessory[index]?.Invoke();
                         }
@@ -568,4 +568,4 @@ private void InitializeSlotNames()
             }
         }
     }
-}
\ No newline at end of file
+}