diff --git a/includes/html/modal/new_service_template.inc.php b/includes/html/modal/new_service_template.inc.php
index b686c85bb8..8306e4f2e5 100644
--- a/includes/html/modal/new_service_template.inc.php
+++ b/includes/html/modal/new_service_template.inc.php
@@ -149,6 +149,7 @@ $('#create-service-template').on('show.bs.modal', function (e) {
         dataType: "json",
         success: function(output) {
             $('#device_group_id').val(output['device_group_id']);
+            $("#device_group_id").prop("disabled", true);
             $('#stype').val(output['stype']);
             $("#stype").prop("disabled", true);
             $('#desc').val(output['desc']);