diff --git a/skin/member/kcpcert/register_form.skin.php b/skin/member/kcpcert/register_form.skin.php
index 0c2971717..10b7fbde4 100644
--- a/skin/member/kcpcert/register_form.skin.php
+++ b/skin/member/kcpcert/register_form.skin.php
@@ -10,7 +10,7 @@ if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
 <input type="hidden" name="agree" value="<?=$agree?>">
 <input type="hidden" name="agree2" value="<?=$agree2?>">
 <? if (isset($member['mb_sex'])) { ?><input type="hidden" name="mb_sex" value="<?=$member['mb_sex']?>"><? } ?>
-<? if (isset($member['mb_nick_date']) && $member['mb_nick_date'] <= date("Y-m-d", G4_SERVER_TIME - ($config['cf_nick_modify'] * 86400))) { // 별명수정일이 지나지 않았다면 ?>
+<? if (isset($member['mb_nick_date']) && $member['mb_nick_date'] > date("Y-m-d", G4_SERVER_TIME - ($config['cf_nick_modify'] * 86400))) { // 별명수정일이 지나지 않았다면 ?>
 <input type="hidden" name="mb_nick_default" value="<?=$member['mb_nick']?>">
 <input type="hidden" name="mb_nick" value="<?=$member['mb_nick']?>">
 <? } ?>