diff --git a/Jint.Tests/Runtime/WeakSetMapTests.cs b/Jint.Tests/Runtime/WeakSetMapTests.cs
index 154c44c7e1..537bb9db64 100644
--- a/Jint.Tests/Runtime/WeakSetMapTests.cs
+++ b/Jint.Tests/Runtime/WeakSetMapTests.cs
@@ -52,7 +52,7 @@ public void WeakSetAddShouldThrowForPrimitiveKey(JsValue key)
     public void WeakMapSetShouldThrowForPrimitiveKey(JsValue key)
     {
         var engine = new Engine();
-        var weakMap = new WeakMapInstance(engine);
+        var weakMap = new JsWeakMap(engine);
 
         var e = Assert.Throws<JavaScriptException>(() => weakMap.WeakMapSet(key, new JsObject(engine)));
         Assert.StartsWith("WeakMap key must be an object, got ", e.Message);
diff --git a/Jint/Native/WeakMap/WeakMapInstance.cs b/Jint/Native/WeakMap/JsWeakMap.cs
similarity index 90%
rename from Jint/Native/WeakMap/WeakMapInstance.cs
rename to Jint/Native/WeakMap/JsWeakMap.cs
index 3daf413ce8..daa3770f42 100644
--- a/Jint/Native/WeakMap/WeakMapInstance.cs
+++ b/Jint/Native/WeakMap/JsWeakMap.cs
@@ -5,11 +5,11 @@
 
 namespace Jint.Native.WeakMap;
 
-internal sealed class WeakMapInstance : ObjectInstance
+internal sealed class JsWeakMap : ObjectInstance
 {
     private readonly ConditionalWeakTable<JsValue, JsValue> _table;
 
-    public WeakMapInstance(Engine engine) : base(engine)
+    public JsWeakMap(Engine engine) : base(engine)
     {
         _table = new ConditionalWeakTable<JsValue, JsValue>();
     }
diff --git a/Jint/Native/WeakMap/WeakMapConstructor.cs b/Jint/Native/WeakMap/WeakMapConstructor.cs
index 948e238bd4..0b513bb4a8 100644
--- a/Jint/Native/WeakMap/WeakMapConstructor.cs
+++ b/Jint/Native/WeakMap/WeakMapConstructor.cs
@@ -35,7 +35,7 @@ public override ObjectInstance Construct(JsValue[] arguments, JsValue newTarget)
             var map = OrdinaryCreateFromConstructor(
                 newTarget,
                 static intrinsics =>  intrinsics.WeakMap.PrototypeObject,
-                static (Engine engine, Realm _, object? _) => new WeakMapInstance(engine));
+                static (Engine engine, Realm _, object? _) => new JsWeakMap(engine));
             if (arguments.Length > 0 && !arguments[0].IsNullOrUndefined())
             {
                 var adder = map.Get("set");
diff --git a/Jint/Native/WeakMap/WeakMapPrototype.cs b/Jint/Native/WeakMap/WeakMapPrototype.cs
index a73f83c661..528328567f 100644
--- a/Jint/Native/WeakMap/WeakMapPrototype.cs
+++ b/Jint/Native/WeakMap/WeakMapPrototype.cs
@@ -70,9 +70,9 @@ private JsValue Has(JsValue thisObject, JsValue[] arguments)
         return map.WeakMapHas(arguments.At(0)) ? JsBoolean.True : JsBoolean.False;
     }
 
-    private WeakMapInstance AssertWeakMapInstance(JsValue thisObject)
+    private JsWeakMap AssertWeakMapInstance(JsValue thisObject)
     {
-        if (thisObject is WeakMapInstance map)
+        if (thisObject is JsWeakMap map)
         {
             return map;
         }