diff --git a/src/xmlrpc.php b/src/xmlrpc.php
index 341a6dc84d..61bb31e609 100644
--- a/src/xmlrpc.php
+++ b/src/xmlrpc.php
@@ -34,7 +34,7 @@ if ( isset( $_GET['rsd'] ) ) { // http://cyber.law.harvard.edu/blogs/gems/tech/r
 	header( 'Content-Type: text/xml; charset=' . get_option( 'blog_charset' ), true );
 	echo '<?xml version="1.0" encoding="' . get_option( 'blog_charset' ) . '"?' . '>';
 	?>
-<rsd version="1.0" xmlns="http://archipelago.phrasewise.com/rsd">
+<rsd version="1.0" xmlns="https://archipelago.phrasewise.com/rsd">
 	<service>
 		<engineName>WordPress</engineName>
 		<engineLink>https://wordpress.org/</engineLink>
@@ -81,7 +81,7 @@ $post_default_title = '';
  * @param string $class The name of the XML-RPC server class.
  */
 $wp_xmlrpc_server_class = apply_filters( 'wp_xmlrpc_server_class', 'wp_xmlrpc_server' );
-$wp_xmlrpc_server       = new $wp_xmlrpc_server_class;
+$wp_xmlrpc_server       = new $wp_xmlrpc_server_class();
 
 // Fire off the request.
 $wp_xmlrpc_server->serve_request();