diff --git a/src/libraries/System.Private.Runtime.InteropServices.JavaScript/tests/System/Runtime/InteropServices/JavaScript/HelperMarshal.cs b/src/libraries/System.Private.Runtime.InteropServices.JavaScript/tests/System/Runtime/InteropServices/JavaScript/HelperMarshal.cs
index 15771c307fa10..192f11f13b6c4 100644
--- a/src/libraries/System.Private.Runtime.InteropServices.JavaScript/tests/System/Runtime/InteropServices/JavaScript/HelperMarshal.cs
+++ b/src/libraries/System.Private.Runtime.InteropServices.JavaScript/tests/System/Runtime/InteropServices/JavaScript/HelperMarshal.cs
@@ -10,7 +10,7 @@ namespace System.Runtime.InteropServices.JavaScript.Tests
 {
     public static class HelperMarshal
     {
-        internal const string INTEROP_CLASS = "[System.Runtime.InteropServices.JavaScript.Tests]System.Runtime.InteropServices.JavaScript.Tests.HelperMarshal:";
+        internal const string INTEROP_CLASS = "[System.Private.Runtime.InteropServices.JavaScript.Tests]System.Runtime.InteropServices.JavaScript.Tests.HelperMarshal:";
         internal static int _i32Value;
         private static void InvokeI32(int a, int b)
         {