diff --git a/mnet/environment.php b/mnet/environment.php
index 982579b87f7..8734cc73faf 100644
--- a/mnet/environment.php
+++ b/mnet/environment.php
@@ -148,9 +148,11 @@ class mnet_environment {
     }
 
     function replace_keys() {
+    	global $CFG;
         $this->keypair = array();
         $this->keypair = mnet_generate_keypair();
         $this->public_key         = $this->keypair['certificate'];
+        $this->wwwroot = $CFG->wwwroot;
         $details                  = openssl_x509_parse($this->public_key);
         $this->public_key_expires = $details['validTo_time_t'];