diff --git a/Octokit.Tests/Clients/PullRequestsClientTests.cs b/Octokit.Tests/Clients/PullRequestsClientTests.cs
index 73bf4e72..f55c0422 100644
--- a/Octokit.Tests/Clients/PullRequestsClientTests.cs
+++ b/Octokit.Tests/Clients/PullRequestsClientTests.cs
@@ -184,9 +184,9 @@ namespace Octokit.Tests.Clients
                 var client = new PullRequestsClient(connection);
 
                 AssertEx.Throws<ArgumentNullException>(async () => await
-                    client.Merge(null, "name", 42, new MergePullRequest("message")));
+                    client.Merged(null, "name", 42));
                 AssertEx.Throws<ArgumentException>(async () => await
-                    client.Merge("owner", null, 42, new MergePullRequest("message")));
+                    client.Merged("owner", null, 42));
             }
         }