diff --git a/sample/index.php b/sample/index.php
index b0e6800..3803e77 100644
--- a/sample/index.php
+++ b/sample/index.php
@@ -247,7 +247,7 @@ if (PHP_SAPI == 'cli') {
                                         class="fa fa-play-circle-o"></i></a>
                                 <a href="doc/tls/TlsCheck.html" class="btn btn-default pull-right">Source <i
                                         class="fa fa-file-code-o"></i></a>
-                                <a href="https://github.paypal.com/SDK-R/tls-update/blob/master/readme.md" class="btn btn-default pull-right">Read More <i
+                                <a href="https://github.com/paypal/tls-update#php" class="btn btn-default pull-right">Read More <i
                                         class="fa fa-exclamation"></i></a>
                             </div>
                         </div>