diff --git a/adm/visit_list.php b/adm/visit_list.php
index 496e98b95..e2b95d6e5 100644
--- a/adm/visit_list.php
+++ b/adm/visit_list.php
@@ -63,15 +63,8 @@ $result = sql_query($sql);
             $referer = get_text(cut_str($row['vi_referer'], 255, ''));
             $referer = urldecode($referer);
 
-            if (strtolower($g4['charset']) == 'utf-8') {
-                if (!is_utf8($referer)) {
-                    $referer = iconv('euc-kr', 'utf-8', $referer);
-                }
-            }
-            else {
-                if (is_utf8($referer)) {
-                    $referer = iconv('utf-8', 'euc-kr', $referer);
-                }
+            if (!is_utf8($referer)) {
+                $referer = iconv_utf8($referer);
             }
 
             $title = str_replace(array('<', '>', '&'), array("&lt;", "&gt;", "&amp;"), $referer);
diff --git a/bbs/rss.php b/bbs/rss.php
index d2478356c..6d12d4347 100644
--- a/bbs/rss.php
+++ b/bbs/rss.php
@@ -30,15 +30,15 @@ if (!$row['bo_use_rss_view']) {
     exit;
 }
 
-Header("Content-type: text/xml");
-header("Cache-Control: no-cache, must-revalidate");
-header("Pragma: no-cache");
+header('Content-type: text/xml');
+header('Cache-Control: no-cache, must-revalidate');
+header('Pragma: no-cache');
 
 $sql = " select gr_subject from {$g4['group_table']} where gr_id = '{$row['gr_id']}' ";
 $row = sql_fetch($sql);
 $subj1 = specialchars_replace($row['gr_subject'], 255);
 
-echo '<?xml version="1.0" encoding="'.$g4['charset'].'"?>'."\n";
+echo '<?xml version="1.0" encoding="utf-8"?>'."\n";
 ?>
 <rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/">
 <channel>
diff --git a/bbs/syndi/include/include.adm.board_delete.inc.php b/bbs/syndi/include/include.adm.board_delete.inc.php
index a419f712d..75e1c05ee 100644
--- a/bbs/syndi/include/include.adm.board_delete.inc.php
+++ b/bbs/syndi/include/include.adm.board_delete.inc.php
@@ -4,7 +4,7 @@
  * @author sol (ngleader@gmail.com)
  * @brief 게시판 삭제시 Syndication Ping
  *        gnuboard4/adm/board_delete.inc.php 파일에 추가
- *        include '../syndi/include/gnuboard4_euckr/include.adm.board_delete.inc.php';
+ *        include '../syndi/include/include.adm.board_delete.inc.php';
  */
 if(!defined('_GNUBOARD_')) return;
 
diff --git a/bbs/syndi/include/include.adm.board_form_update.php b/bbs/syndi/include/include.adm.board_form_update.php
index f643168be..146188666 100644
--- a/bbs/syndi/include/include.adm.board_form_update.php
+++ b/bbs/syndi/include/include.adm.board_form_update.php
@@ -4,7 +4,7 @@
  * @author sol (ngleader@gmail.com)
  * @brief 게시판 삭제시 Syndication Ping
  *        gnuboard4/adm/board_form_update.php 파일에 추가
- *        include '../syndi/include/gnuboard4_euckr/include.adm.board_form_update.php';
+ *        include '../syndi/include/include.adm.board_form_update.php';
  */
 if(!defined('_GNUBOARD_')) return;
 
diff --git a/bbs/syndi/include/include.bbs.delete.php b/bbs/syndi/include/include.bbs.delete.php
index 0ddfcc1c8..19aa2c417 100644
--- a/bbs/syndi/include/include.bbs.delete.php
+++ b/bbs/syndi/include/include.bbs.delete.php
@@ -4,7 +4,7 @@
  * @author sol (ngleader@gmail.com)
  * @brief 글 삭제시 Syndication Ping
  *        gnuboard4/bbs/bbs.delete.php 파일에 추가
- *        include '../syndi/include/gnuboard4_euckr/include.bbs.delete.php';
+ *        include '../syndi/include/include.bbs.delete.php';
  */
 if(!defined('_GNUBOARD_')) return;
 
diff --git a/bbs/syndi/include/include.bbs.delete_all.php b/bbs/syndi/include/include.bbs.delete_all.php
index cb9bc40e2..248e9a7d4 100644
--- a/bbs/syndi/include/include.bbs.delete_all.php
+++ b/bbs/syndi/include/include.bbs.delete_all.php
@@ -4,7 +4,7 @@
  * @author sol (ngleader@gmail.com)
  * @brief 글 삭제시 Syndication Ping
  *        gnuboard4/bbs/bbs.delete_all.php 파일에 추가
- *        include '../syndi/include/gnuboard4_euckr/include.bbs.delete_all.php';
+ *        include '../syndi/include/include.bbs.delete_all.php';
  */
 if(!defined('_GNUBOARD_')) return;
 
diff --git a/bbs/syndi/include/include.bbs.move_update.php b/bbs/syndi/include/include.bbs.move_update.php
index d29a19b34..dff7522b2 100644
--- a/bbs/syndi/include/include.bbs.move_update.php
+++ b/bbs/syndi/include/include.bbs.move_update.php
@@ -4,7 +4,7 @@
  * @author sol (ngleader@gmail.com)
  * @brief 글 등록/수정시 Syndication Ping
  *        gnuboard4/bbs/move_update.php 파일에 추가
- *        include '../syndi/include/gnuboard4_euckr/include.bbs.move_update.php';
+ *        include '../syndi/include/include.bbs.move_update.php';
  */
 if(!defined('_GNUBOARD_')) return;
 
diff --git a/bbs/syndi/include/include.bbs.write_update.php b/bbs/syndi/include/include.bbs.write_update.php
index 81655e807..69875f3d8 100644
--- a/bbs/syndi/include/include.bbs.write_update.php
+++ b/bbs/syndi/include/include.bbs.write_update.php
@@ -4,7 +4,7 @@
  * @author sol (ngleader@gmail.com)
  * @brief 글 등록/수정시 Syndication Ping
  *        gnuboard4/bbs/write_update.php 파일에 추가
- *        include '../syndi/include/gnuboard4_euckr/include.bbs.write_update.php';
+ *        include '../syndi/include/include.bbs.write_update.php';
  */
 if(!defined('_GNUBOARD_')) return;
 
diff --git a/lib/common.lib.php b/lib/common.lib.php
index 9b7fdae8a..116e04152 100644
--- a/lib/common.lib.php
+++ b/lib/common.lib.php
@@ -137,19 +137,6 @@ function alert($msg='', $url='', $error=true, $post=false)
 
     if (!$msg) $msg = '올바른 방법으로 이용해 주십시오.';
 
-    /*
-    //header("Content-Type: text/html; charset=$g4['charset']");
-    echo "<meta http-equiv=\"content-type\" content=\"text/html; charset={$g4['charset']}\">";
-    echo "<script>alert('$msg');";
-    if (!$url)
-        echo "history.go(-1);";
-    echo "</script>";
-    if ($url)
-        // 4.06.00 : 불여우의 경우 아래의 코드를 제대로 인식하지 못함
-        //echo "<meta http-equiv='refresh' content='0;url=$url'>";
-        goto_url($url);
-    exit;
-    */
     $header = '';
     if (isset($g4['title'])) {
         $header = $g4['title'];
@@ -164,11 +151,6 @@ function alert_close($msg, $error=true)
 {
     global $g4;
 
-    /*
-    echo "<meta http-equiv=\"content-type\" content=\"text/html; charset={$g4['charset']}\">";
-    echo "<script> alert('$msg'); window.close(); </script>";
-    exit;
-    */
     $header = '';
     if (isset($g4['title'])) {
         $header = $g4['title'];
@@ -1309,10 +1291,7 @@ function get_table_define($table, $crlf="\n")
         $schema_create     .= implode($columns, ', ') . ')';
     } // end while
 
-    if (strtolower($g4['charset']) == 'utf-8')
-        $schema_create .= $crlf . ') DEFAULT CHARSET=utf8';
-    else
-        $schema_create .= $crlf . ')';
+    $schema_create .= $crlf . ') DEFAULT CHARSET=utf8';
 
     return $schema_create;
 } // end of the 'PMA_getTableDef()' function
@@ -1517,13 +1496,6 @@ function cut_hangul_last($hangul)
         }
     }
 
-    // 홀수라면 한글이 반쪽난 상태이므로
-    if (strtoupper($g4['charset']) != 'UTF-8') {
-        if ($cnt%2) {
-            $hangul = substr($hangul, 0, $cnt-1);
-        }
-    }
-
     return $hangul;
 }
 
diff --git a/lib/mailer.lib.php b/lib/mailer.lib.php
index f816a3d7d..3e6aa9985 100644
--- a/lib/mailer.lib.php
+++ b/lib/mailer.lib.php
@@ -11,11 +11,8 @@ function mailer($fname, $fmail, $to, $subject, $content, $type=0, $file='', $cc=
     // 메일발송 사용을 하지 않는다면
     if (!$config['cf_email_use']) return;
 
-    //$fname   = "=?$g4[charset]?B?" . base64_encode($fname) . "?=";
-    //$subject = "=?$g4[charset]?B?" . base64_encode($subject) . "?=";
     $fname   = "=?utf-8?B?" . base64_encode($fname) . "?=";
     $subject = "=?utf-8?B?" . base64_encode($subject) . "?=";
-    //$g4[charset] = ($g4[charset] != "") ? "charset=$g4[charset]" : "";
 
     $header  = "Return-Path: <$fmail>\n";
     $header .= "From: $fname <$fmail>\n";