diff --git a/install/lang/en_utf8/installer.php b/install/lang/en_utf8/installer.php
index 62deda67ef6..f31a5cfae44 100644
--- a/install/lang/en_utf8/installer.php
+++ b/install/lang/en_utf8/installer.php
@@ -313,5 +313,6 @@ $string['wrongsourcebase'] = 'Wrong source URL base';
 $string['wrongzipfilename'] = 'Wrong ZIP file name';
 $string['wwwroot'] = 'Web address';
 $string['wwwrooterror'] = 'The \'Web Address\' does not appear to be valid - this Moodle installation doesn\'t appear to be there. The value below has been reset.';
+$string['xmlrpcrecommended'] = 'The xmlrpc extension is needed for hub communication, and useful for web services and Moodle networking';
 $string['ziprequired'] = 'The Zip PHP extension is now required by Moodle, info-ZIP binaries or PclZip library are not used anymore.';
 ?>