diff --git a/Example/DetailViewController.swift b/Example/DetailViewController.swift
index 0379a00b9..9566c5624 100644
--- a/Example/DetailViewController.swift
+++ b/Example/DetailViewController.swift
@@ -75,7 +75,7 @@ class DetailViewController: UITableViewController {
         refreshControl?.beginRefreshing()
 
         let start = CACurrentMediaTime()
-        request.responseString { request, response, result in
+        request.responseString { request, response, _, result in
             let end = CACurrentMediaTime()
             self.elapsedTime = end - start