diff --git a/SharedTests/HistoryTests.cs b/SharedTests/HistoryTests.cs
index caf5cec..4ecfe57 100644
--- a/SharedTests/HistoryTests.cs
+++ b/SharedTests/HistoryTests.cs
@@ -1,6 +1,5 @@
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using System;
-using System.Collections.Generic;
 
 namespace SemiColinGames.Tests {
   [TestClass]