1 files changed, 1 insertions, 1 deletions
diff --git a/src/DotNetOpenAuth.Test/OpenId/ChannelElements/ExtensionsBindingElementTests.cs b/src/DotNetOpenAuth.Test/OpenId/ChannelElements/ExtensionsBindingElementTests.cs
index 849c796..dd47782 100644
--- a/src/DotNetOpenAuth.Test/OpenId/ChannelElements/ExtensionsBindingElementTests.cs
+++ b/src/DotNetOpenAuth.Test/OpenId/ChannelElements/ExtensionsBindingElementTests.cs
@@ -7,7 +7,6 @@
 namespace DotNetOpenAuth.Test.OpenId.ChannelElements {
 	using System;
 	using System.Collections.Generic;
-	using System.Diagnostics.Contracts;
 	using System.Linq;
 	using System.Text.RegularExpressions;
 	using DotNetOpenAuth.Messaging;
@@ -19,6 +18,7 @@ namespace DotNetOpenAuth.Test.OpenId.ChannelElements {
 	using DotNetOpenAuth.Test.Mocks;
 	using DotNetOpenAuth.Test.OpenId.Extensions;
 	using NUnit.Framework;
+	using Validation;
 
 	[TestFixture]
 	public class ExtensionsBindingElementTests : OpenIdTestBase {