diff --git a/Octokit/Http/ApiInfo.cs b/Octokit/Http/ApiInfo.cs
index 8050a448..54550cb7 100644
--- a/Octokit/Http/ApiInfo.cs
+++ b/Octokit/Http/ApiInfo.cs
@@ -18,7 +18,7 @@ namespace Octokit
             RateLimit rateLimit)
         {
             Ensure.ArgumentNotNull(links, "links");
-            Ensure.ArgumentNotNull(oauthScopes, "ouathScopes");
+            Ensure.ArgumentNotNull(oauthScopes, "oauthScopes");
 
             Links = new ReadOnlyDictionary<string, Uri>(links);
             OauthScopes = new ReadOnlyCollection<string>(oauthScopes);