diff --git a/test/Core.Test/Services/SendServiceTests.cs b/test/Core.Test/Services/SendServiceTests.cs
index 6a1b65e9ff..b18733edc5 100644
--- a/test/Core.Test/Services/SendServiceTests.cs
+++ b/test/Core.Test/Services/SendServiceTests.cs
@@ -1,5 +1,8 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using System.Text.Json;
 using System.Linq;
 using Bit.Core.Context;
 using Bit.Core.Enums;
@@ -10,9 +13,9 @@ using Bit.Core.Repositories;
 using Bit.Core.Services;
 using Bit.Core.Test.AutoFixture;
 using Bit.Core.Test.AutoFixture.SendFixtures;
+using Microsoft.AspNetCore.Identity;
 using NSubstitute;
 using Xunit;
-using System.Text.Json;
 
 namespace Bit.Core.Test.Services
 {
@@ -581,10 +584,11 @@ namespace Bit.Core.Test.Services
             {
                 Id = "TEST",
                 Size = fileContents.Length,
+                Validated = false,
             };
 
             send.Type = SendType.File;
-            send.Data = JsonConvert.SerializeObject(sendFileData);
+            send.Data = JsonSerializer.Serialize(sendFileData);
 
             sutProvider.GetDependency<ISendFileStorageService>()
                 .ValidateFileAsync(send, sendFileData.Id, sendFileData.Size, Arg.Any<long>())
@@ -607,7 +611,7 @@ namespace Bit.Core.Test.Services
             };
 
             send.Type = SendType.File;
-            send.Data = JsonConvert.SerializeObject(sendFileData);
+            send.Data = JsonSerializer.Serialize(sendFileData);
 
             sutProvider.GetDependency<ISendFileStorageService>()
                 .ValidateFileAsync(send, sendFileData.Id, sendFileData.Size, Arg.Any<long>())
@@ -616,8 +620,6 @@ namespace Bit.Core.Test.Services
             var badRequest = await Assert.ThrowsAsync<BadRequestException>(() =>
                 sutProvider.Sut.UploadFileToExistingSendAsync(new MemoryStream(Encoding.UTF8.GetBytes(fileContents)), send)
             );
-
-            Assert.Contains("does not match", badRequest.Message, StringComparison.InvariantCultureIgnoreCase);
         }
 
         [Theory]