diff --git a/Jint/Native/JsSet.cs b/Jint/Native/JsSet.cs
index f6335aa56..f7c74c54f 100644
--- a/Jint/Native/JsSet.cs
+++ b/Jint/Native/JsSet.cs
@@ -22,7 +22,7 @@ internal JsSet(Engine engine, OrderedSet<JsValue> set) : base(engine)
 
     public int Size => _set.Count;
 
-    public JsValue? this[int index]
+    internal JsValue? this[int index]
     {
         get { return index < _set._list.Count ? _set._list[index] : null; }
     }