diff --git a/pandora_console/include/class/Tree.class.php b/pandora_console/include/class/Tree.class.php
index 0ce2e27632..64e3639e46 100644
--- a/pandora_console/include/class/Tree.class.php
+++ b/pandora_console/include/class/Tree.class.php
@@ -660,7 +660,7 @@ class Tree {
 											$group_acl
 											$agent_search_filter
 											$agent_status_filter
-									GROUP BY tmg.name
+									GROUP BY tmg.id_mg
 									ORDER BY $order_fields";
 						}
 						else {