diff --git a/includes/defaults.inc.php b/includes/defaults.inc.php
index 8c02f3779..cd0d2e380 100644
--- a/includes/defaults.inc.php
+++ b/includes/defaults.inc.php
@@ -571,6 +571,7 @@ $config['modules_compat']['rfc1628']['liebert']           = 1;
 $config['modules_compat']['rfc1628']['netmanplus']        = 1;
 $config['modules_compat']['rfc1628']['deltaups']          = 1;
 $config['modules_compat']['rfc1628']['poweralert']        = 1;
+$config['modules_compat']['rfc1628']['multimatic']        = 1;
 
 # Enable daily updates
 $config['update'] = 1;