diff --git a/adm/boardgroup_form.php b/adm/boardgroup_form.php
index 5e82f51ed..1f43c28a0 100644
--- a/adm/boardgroup_form.php
+++ b/adm/boardgroup_form.php
@@ -20,6 +20,10 @@ if ($w == '') {
 else
     alert('제대로 된 값이 넘어오지 않았습니다.');
 
+if (!isset($group['gr_device'])) {
+    sql_query(" ALTER TABLE `{$g4['group_table']}` ADD `gr_device` ENUM('both','pc','mobile') NOT NULL DEFAULT 'both' AFTER `gr_subject` ", false);
+}
+
 if (!isset($group['gr_show_menu'])) {
     sql_query(" ALTER TABLE `{$g4['group_table']}`  ADD `gr_show_menu` TINYINT NOT NULL DEFAULT '0' AFTER `gr_use_access`,  ADD `gr_order` INT NOT NULL DEFAULT '0' AFTER `gr_show_menu` ", false);
 }