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Diffstat (limited to 'src/DotNetOpenAuth.OpenId/OpenId/Messages/DirectResponseBase.cs')
-rw-r--r--src/DotNetOpenAuth.OpenId/OpenId/Messages/DirectResponseBase.cs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/DotNetOpenAuth.OpenId/OpenId/Messages/DirectResponseBase.cs b/src/DotNetOpenAuth.OpenId/OpenId/Messages/DirectResponseBase.cs
index e7619bc..da6a1f6 100644
--- a/src/DotNetOpenAuth.OpenId/OpenId/Messages/DirectResponseBase.cs
+++ b/src/DotNetOpenAuth.OpenId/OpenId/Messages/DirectResponseBase.cs
@@ -54,7 +54,7 @@ namespace DotNetOpenAuth.OpenId.Messages {
/// <param name="responseVersion">The OpenID version of the response message.</param>
/// <param name="originatingRequest">The originating request. May be null in case the request is unrecognizable and this is an error response.</param>
protected DirectResponseBase(Version responseVersion, IDirectedProtocolMessage originatingRequest) {
- Contract.Requires<ArgumentNullException>(responseVersion != null);
+ Requires.NotNull(responseVersion, "responseVersion");
this.Version = responseVersion;
this.originatingRequest = originatingRequest;