1 files changed, 1 insertions, 1 deletions
diff --git a/src/DotNetOpenAuth.Test/Mocks/CoordinatingOutgoingWebResponse.cs b/src/DotNetOpenAuth.Test/Mocks/CoordinatingOutgoingWebResponse.cs
index 90dbd7d..9df791c 100644
--- a/src/DotNetOpenAuth.Test/Mocks/CoordinatingOutgoingWebResponse.cs
+++ b/src/DotNetOpenAuth.Test/Mocks/CoordinatingOutgoingWebResponse.cs
@@ -8,10 +8,10 @@ namespace DotNetOpenAuth.Test.Mocks {
 	using System;
 	using System.Collections.Generic;
 	using System.ComponentModel;
-	using System.Diagnostics.Contracts;
 	using System.Linq;
 	using System.Text;
 	using DotNetOpenAuth.Messaging;
+	using Validation;
 
 	internal class CoordinatingOutgoingWebResponse : OutgoingWebResponse {
 		private CoordinatingChannel receivingChannel;