diff --git a/DakotaUnitTest/GkvObjectUnitTest.cs b/DakotaUnitTest/GkvObjectUnitTest.cs
index 0d871a40e..2afee1359 100644
--- a/DakotaUnitTest/GkvObjectUnitTest.cs
+++ b/DakotaUnitTest/GkvObjectUnitTest.cs
@@ -30,7 +30,7 @@ namespace DakotaUnitTest
         [TestMethod]
         public void ValidateRequest()
 		{
-            var req = new GkvClientSumRequest();
+            var req = new GkvClientSumRequestJson();
             req.Tenant = "1234567890";
             req.GkvSecretKey = "gG4qtB5g5G45345bg35bg5";
             req.Start = new DateTime(2024, 12, 1);