diff --git a/adm/board_form.php b/adm/board_form.php
index 23ab9f8a2..d9affee10 100644
--- a/adm/board_form.php
+++ b/adm/board_form.php
@@ -46,7 +46,7 @@ if (!isset($board['bo_mobile_content_head'])) {
 }
 
 if (!isset($board['bo_use_cert'])) {
-    sql_query(" ALTER TABLE `{$g4['board_table']}`  ADD `bo_use_cert` ENUM('none','cert','adult') NOT NULL DEFAULT 'none' AFTER `bo_use_email` ", false);
+    sql_query(" ALTER TABLE `{$g4['board_table']}`  ADD `bo_use_cert` ENUM('','cert','adult') NOT NULL DEFAULT 'none' AFTER `bo_use_email` ", false);
 }
 
 $required = "";
@@ -91,7 +91,6 @@ if ($w == '') {
     $board['bo_include_head'] = '_head.php';
     $board['bo_include_tail'] = '_tail.php';
     $board['bo_show_menu'] = true;
-    $board['bo_use_cert'] = 'none';
 
 } else if ($w == 'u') {
 
@@ -555,8 +554,8 @@ $pg_anchor = '<ul class="anchor">
             <?php echo help("본인확인 여부에 따라 게시물을 조회 할 수 있도록 합니다."); ?>
             <select id="bo_use_cert" name="bo_use_cert">
                 <?php 
-                echo option_selected("none",  $board['bo_use_cert'], "사용안함");
-                if ($config['cf_kcpcert_use'] != 'none') {
+                echo option_selected("",  $board['bo_use_cert'], "사용안함");
+                if ($config['cf_kcpcert_use'] != '') {
                     echo option_selected("cert",  $board['bo_use_cert'], "본인확인된 회원전체");
                     echo option_selected("adult", $board['bo_use_cert'], "본인확인된 성인회원만");
                 }
diff --git a/adm/config_form.php b/adm/config_form.php
index 16d86ca86..e981a1163 100644
--- a/adm/config_form.php
+++ b/adm/config_form.php
@@ -37,7 +37,7 @@ if(!isset($config['cf_kcpcert_site_cd'])) {
 
 if(!isset($config['cf_kcpcert_use'])) {
     sql_query(" ALTER TABLE `{$g4['config_table']}`
-                    ADD `cf_kcpcert_use` ENUM('none','test','service') NOT NULL DEFAULT 'none' AFTER `cf_memo_send_point` ", TRUE);
+                    ADD `cf_kcpcert_use` ENUM('','test','service') NOT NULL DEFAULT 'none' AFTER `cf_memo_send_point` ", TRUE);
 }
 
 if(!isset($config['cf_mobile_pages'])) {
@@ -548,7 +548,7 @@ $pg_anchor = '<ul class="anchor">
         <td>
             <?php echo help('KCP 사이트코드가 없으면 테스트만 가능합니다.') ?>
             <select name="cf_kcpcert_use" id="cf_kcpcert_use">
-                <?php echo option_selected("none",    $config['cf_kcpcert_use'], "사용안함"); ?>
+                <?php echo option_selected("",        $config['cf_kcpcert_use'], "사용안함"); ?>
                 <?php echo option_selected("test",    $config['cf_kcpcert_use'], "테스트"); ?>
                 <?php echo option_selected("service", $config['cf_kcpcert_use'], "실서비스"); ?>
             </select>