diff --git a/index.php b/index.php
index 7842f19..d18a832 100644
--- a/index.php
+++ b/index.php
@@ -30,6 +30,12 @@ include 'header.php';
 </pre>
 <br />
 
+<!-- maintenance info -->
+<pre class="alert">
+<i class="fa fa-exclamation-triangle fa-fw" aria-hidden="true"></i><strong>&nbsp; the registration for the matrix instance is temporarily closed.</strong>
+the reason for this is an increased volume of spam users.
+</pre>
+
 <table>
   <tr> <th class="tw140"></th> <th class="tw110"></th> <th></th> </tr>
 <?php