diff --git a/mnet/xmlrpc/server.php b/mnet/xmlrpc/server.php
index defca4eaaef..d41fb0202b7 100644
--- a/mnet/xmlrpc/server.php
+++ b/mnet/xmlrpc/server.php
@@ -366,7 +366,7 @@ function mnet_server_dispatch($payload) {
         exit(mnet_server_fault(713, 'nosuchfunction'));
     }
 
-    if(preg_match("/^system./", $method)) {
+    if(preg_match("/^system\./", $method)) {
         $callstack  = explode('.', $method);
     } else {
         $callstack  = explode('/', $method);