diff --git a/bbs/register_form_update.php b/bbs/register_form_update.php
index 7cc1039f4..55fc56700 100644
--- a/bbs/register_form_update.php
+++ b/bbs/register_form_update.php
@@ -75,7 +75,10 @@ if ($w == '' || $w == 'u') {
     if ($w=='') {
         if ($msg = exist_mb_id($mb_id))     alert($msg);
 
-        if (!exist_mb_id($mb_recommend))    alert("추천인이 존재하지 않습니다.");
+        if ($config['cf_use_recommend']) {
+            if (!exist_mb_id($mb_recommend))    
+                alert("추천인이 존재하지 않습니다.");
+        }
 
         if (strtolower($mb_id) == strtolower($mb_recommend)) {
             alert('본인을 추천할 수 없습니다.');
diff --git a/skin/member/basic/register_form.skin.php b/skin/member/basic/register_form.skin.php
index 97f47a0e3..d38367053 100644
--- a/skin/member/basic/register_form.skin.php
+++ b/skin/member/basic/register_form.skin.php
@@ -214,7 +214,7 @@ if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
 <?php if ($w == "" && $config['cf_use_recommend']) {  ?>
 <tr>
     <th scope="row"><label for="reg_mb_recommend">추천인아이디</label></th>
-    <td><input type="text" name="mb_recommend" id="reg_mb_recommend" class="frm_input"></td>
+    <td><input type="text" name="mb_recommend" id="reg_mb_recommend" class="frm_input" required></td>
 </tr>
 <?php }  ?>