diff --git a/mobile/skin/member/basic/register_form.skin.php b/mobile/skin/member/basic/register_form.skin.php
index 89c7e67f0..cd720a6bb 100644
--- a/mobile/skin/member/basic/register_form.skin.php
+++ b/mobile/skin/member/basic/register_form.skin.php
@@ -113,10 +113,10 @@ if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
     </th>
     <td>
         <label for="reg_mb_zip1" class="sound_only">우편번호 앞자리<?php echo $config['cf_req_addr']?'<strong class="sound_only"> 필수</strong>':''; ?></label>
-        <input type="text" name="mb_zip1" value="<?php echo $member['mb_zip1'] ?>" id="reg_mb_zip1" <?php echo $config['cf_req_addr']?"required":""; ?> class="frm_input <?php echo $config['cf_req_addr']?"required":""; ?>" size="2" maxlength="3">
+        <input type="text" name="mb_zip1" value="<?php echo $member['mb_zip1'] ?>" id="reg_mb_zip1" <?php echo $config['cf_req_addr']?"required":""; ?> class="frm_input <?php echo $config['cf_req_addr']?"required":""; ?>" size="3" maxlength="3">
         -
         <label for="reg_mb_zip2" class="sound_only">우편번호 뒷자리<?php echo $config['cf_req_addr']?'<strong class="sound_only"> 필수</strong>':''; ?></label>
-        <input type="text" name="mb_zip2" value="<?php echo $member['mb_zip2'] ?>" id="reg_mb_zip2" <?php echo $config['cf_req_addr']?"required":""; ?> class="frm_input <?php echo $config['cf_req_addr']?"required":""; ?>" size="2" maxlength="3">
+        <input type="text" name="mb_zip2" value="<?php echo $member['mb_zip2'] ?>" id="reg_mb_zip2" <?php echo $config['cf_req_addr']?"required":""; ?> class="frm_input <?php echo $config['cf_req_addr']?"required":""; ?>" size="3" maxlength="3">
         <span id="reg_win_zip" style="display:block"></span>
         <label for="reg_mb_addr1" class="sound_only">주소<?php echo $config['cf_req_addr']?'<strong class="sound_only"> 필수</strong>':''; ?></label>
         <input type="text" name="mb_addr1" value="<?php echo $member['mb_addr1'] ?>" id="reg_mb_addr1" <?php echo $config['cf_req_addr']?"required":""; ?> class="frm_input frm_address <?php echo $config['cf_req_addr']?"required":""; ?>" size="50">