diff --git a/lang/en_utf8/mnet.php b/lang/en_utf8/mnet.php
index 50c5e920f93..be81426c911 100644
--- a/lang/en_utf8/mnet.php
+++ b/lang/en_utf8/mnet.php
@@ -301,4 +301,5 @@ $string['importfields'] = 'Fields to import';
 $string['exportfields'] = 'Fields to export';
 $string['defaultfields'] = 'The globally set fields, which you are about to override, are: ';
 $string['leavedefault'] = 'Use the default settings instead';
+$string['noaddressforhost'] = 'Sorry, but that hostname ($a) could not be resolved!';
 ?>
diff --git a/mnet/peer.php b/mnet/peer.php
index 75f5fef546c..6f82b293d6e 100644
--- a/mnet/peer.php
+++ b/mnet/peer.php
@@ -58,8 +58,7 @@ class mnet_peer {
 
         // Couldn't find the IP address?
         if ($ip_address === $hostname && !preg_match('/^\d+\.\d+\.\d+.\d+$/',$hostname)) {
-            $this->error[] = array('code' => 2, 'text' => get_string("noaddressforhost", 'mnet'));
-            return false;
+            throw new moodle_exception('noaddressforhost', 'mnet', '', $hostname);
         }
 
         $this->name = $wwwroot;