diff --git a/admin/mnet/peer_forms.php b/admin/mnet/peer_forms.php
index a9339b05104..b50f869c79d 100644
--- a/admin/mnet/peer_forms.php
+++ b/admin/mnet/peer_forms.php
@@ -60,7 +60,8 @@ class mnet_simple_host_form extends moodleform {
         }
         if ($host = $DB->get_record('mnet_host', array('wwwroot' => $wwwroot))) {
             global $CFG;
-            return array('wwwroot' => get_string('hostexists', 'mnet', $CFG->wwwroot . '/admin/mnet/peers.php?hostid=' . $host->id));
+            return array('wwwroot' => get_string('hostexists', 'mnet',
+                $CFG->wwwroot . '/' . $CFG->admin . '/mnet/peers.php?hostid=' . $host->id));
         }
         return array();
     }
diff --git a/admin/mnet/peers.php b/admin/mnet/peers.php
index 24ef9b6af9a..de3d899d31f 100644
--- a/admin/mnet/peers.php
+++ b/admin/mnet/peers.php
@@ -109,7 +109,7 @@ if (!empty($hostid)) {
     $mnet_peer->set_id($hostid);
     echo $OUTPUT->header();
     $currenttab = 'mnetdetails';
-    require_once($CFG->dirroot . '/admin/mnet/tabs.php');
+    require_once($CFG->dirroot . '/' . $CFG->admin . '/mnet/tabs.php');
 
     if ($hostid != $CFG->mnet_all_hosts_id) {
         $mnet_peer->currentkey = mnet_get_public_key($mnet_peer->wwwroot, $mnet_peer->application);
@@ -144,7 +144,7 @@ if (empty($noreviewform) && $id = optional_param('id', 0, PARAM_INT)) {
     // we're editing an existing one, so set up the tabs
     $currenttab = 'mnetdetails';
     $mnet_peer->set_id($id);
-    require_once($CFG->dirroot . '/admin/mnet/tabs.php');
+    require_once($CFG->dirroot . '/' . $CFG->admin . '/mnet/tabs.php');
 } else if (empty($noreviewform) && ($wwwroot = optional_param('wwwroot', '', PARAM_URL)) && ($applicationid = optional_param('applicationid', 0, PARAM_INT))) {
     $application = $DB->get_field('mnet_application', 'name', array('id'=>$applicationid));
     $mnet_peer->bootstrap($wwwroot, null, $application);
diff --git a/admin/mnet/profilefields.php b/admin/mnet/profilefields.php
index 5f5fd6b1ec0..7c2f066247b 100644
--- a/admin/mnet/profilefields.php
+++ b/admin/mnet/profilefields.php
@@ -26,7 +26,7 @@
 
 require(dirname(dirname(dirname(__FILE__))).'/config.php');
 require_once($CFG->libdir.'/adminlib.php');
-require_once($CFG->dirroot . '/admin/mnet/profilefields_form.php');
+require_once($CFG->dirroot . '/' . $CFG->admin .'/mnet/profilefields_form.php');
 $mnet = get_mnet_environment();
 
 require_login();
diff --git a/admin/mnet/services.php b/admin/mnet/services.php
index cdc4fe3a5c2..e86d486b346 100644
--- a/admin/mnet/services.php
+++ b/admin/mnet/services.php
@@ -27,7 +27,7 @@
 
 require_once(dirname(dirname(dirname(__FILE__))) . '/config.php');
 require_once($CFG->libdir.'/adminlib.php');
-require_once($CFG->dirroot . '/admin/mnet/services_form.php');
+require_once($CFG->dirroot . '/' . $CFG->admin . '/mnet/services_form.php');
 $mnet = get_mnet_environment();
 
 require_login();
@@ -82,7 +82,7 @@ if ($formdata = $mform->get_data()) {
 
 echo $OUTPUT->header();
 $currenttab = 'mnetservices';
-require_once($CFG->dirroot . '/admin/mnet/tabs.php');
+require_once($CFG->dirroot . '/' . $CFG->admin . '/mnet/tabs.php');
 echo $OUTPUT->box_start();
 $s = mnet_get_service_info($mnet_peer, false); // basic data only
 $mform->set_data($s);