diff --git a/bbs/filter.ajax.php b/bbs/filter.ajax.php
index 201ca1f78..8eefa8e82 100644
--- a/bbs/filter.ajax.php
+++ b/bbs/filter.ajax.php
@@ -1,18 +1,11 @@
 <?
 include_once('./_common.php');
 
-header("Content-Type: text/html; charset={$g4['charset']}");
+header("Content-Type: text/html; charset=utf-8");
 
 $subject = strtolower($_POST['subject']);
 $content = strtolower(strip_tags($_POST['content']));
 
-//euc-kr 일 경우 $config['cf_filter'] 를 utf-8로 변환한다.
-if (strtolower($g4['charset']) == 'euc-kr') {
-    //$subject = convert_charset('utf-8', 'cp949', $subject);
-    //$content = convert_charset('utf-8', 'cp949', $content);
-    $config['cf_filter'] = convert_charset('cp949', 'utf-8', $config['cf_filter']);
-}
-
 //$filter = explode(",", strtolower(trim($config['cf_filter'])));
 // strtolower 에 의한 한글 변형으로 아래 코드로 대체 (곱슬최씨님이 알려 주셨습니다.)
 $filter = explode(",", trim($config['cf_filter']));
@@ -23,10 +16,7 @@ for ($i=0; $i<count($filter); $i++) {
     $subj = "";
     $pos = strpos($subject, $str);
     if ($pos !== false) {
-        if (strtolower($g4['charset']) == 'euc-kr')
-            $subj = convert_charset('utf-8', 'cp949', $str);//cp949 로 변환해서 반환
-        else
-            $subj = $str;
+        $subj = $str;
         break;
     }
 
@@ -34,10 +24,7 @@ for ($i=0; $i<count($filter); $i++) {
     $cont = "";
     $pos = strpos($content, $str);
     if ($pos !== false) {
-        if (strtolower($g4['charset']) == 'euc-kr')
-            $cont = convert_charset('utf-8', 'cp949', $str);//cp949 로 변환해서 반환
-        else
-            $cont = $str;
+        $cont = $str;
         break;
     }
 }