diff --git a/includes/discovery/services.inc.php b/includes/discovery/services.inc.php
index 0638dfae09..56b5ffab31 100644
--- a/includes/discovery/services.inc.php
+++ b/includes/discovery/services.inc.php
@@ -32,7 +32,7 @@ if (Config::get('discover_services')) {
     }
     foreach (dbFetchRows('SELECT `service_template_id` FROM `services_template`') as $service_template) {
         foreach (dbFetchRows('SELECT `id` FROM `device_groups`') as $device_group) {
-            discover_service_template($device_group, $service_template);
+            discover_service_template($device_group['id'], $service_template['service_template_id']);
         }
     }
     echo "\n";