1 files changed, 1 insertions, 1 deletions
diff --git a/src/DotNetOpenAuth.OpenId/OpenId/RelyingPartyEndpointDescription.cs b/src/DotNetOpenAuth.OpenId/OpenId/RelyingPartyEndpointDescription.cs
index f0d3b6a..d7ebd3a 100644
--- a/src/DotNetOpenAuth.OpenId/OpenId/RelyingPartyEndpointDescription.cs
+++ b/src/DotNetOpenAuth.OpenId/OpenId/RelyingPartyEndpointDescription.cs
@@ -8,10 +8,10 @@ namespace DotNetOpenAuth.OpenId {
 	using System;
 	using System.Collections.Generic;
 	using System.Diagnostics.CodeAnalysis;
-	using System.Diagnostics.Contracts;
 	using System.Linq;
 	using System.Text;
 	using DotNetOpenAuth.Messaging;
+	using Validation;
 
 	/// <summary>
 	/// A description of some OpenID Relying Party endpoint.