diff --git a/tests/dotnet/CSharp/CSharp.Tests.cs b/tests/dotnet/CSharp/CSharp.Tests.cs
index c5879fe7..6f312a7c 100644
--- a/tests/dotnet/CSharp/CSharp.Tests.cs
+++ b/tests/dotnet/CSharp/CSharp.Tests.cs
@@ -3,10 +3,8 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Reflection;
 using System.Runtime.InteropServices;
-using System.Text;
 using CSharp;
 using NUnit.Framework;
-using ValueType = CSharp.ValueType;
 
 [TestFixture]
 public unsafe class CSharpTests