diff --git a/src/Core/NiceIO_Ext.t.cs b/src/Core/NiceIO_Ext.t.cs
index ebfef39..2ebd02f 100644
--- a/src/Core/NiceIO_Ext.t.cs
+++ b/src/Core/NiceIO_Ext.t.cs
@@ -1,7 +1,3 @@
-using System;
-using NUnit.Framework;
-using Shouldly;
-
 class NiceIOTests
 {
     [Test]