diff --git a/inc/lang/ko/lang.php b/inc/lang/ko/lang.php
index 8f7874d2a7677105227f26fb9776b9ff1a4170c7..252df6033e3d940f407b15b453029b8074d5fb93 100644
--- a/inc/lang/ko/lang.php
+++ b/inc/lang/ko/lang.php
@@ -3,18 +3,18 @@
 /**
  * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
  *
+ * @author Seungheon Song <esketch@gmail.com>
  * @author Hyun Kim <lawfully@gmail.com>
  * @author jk Lee
- * @author dongnak@gmail.com
+ * @author dongnak <dongnak@gmail.com>
  * @author Song Younghwan <purluno@gmail.com>
  * @author Seung-Chul Yoo <dryoo@live.com>
- * @author erial2@gmail.com
+ * @author erial2 <erial2@gmail.com>
  * @author Myeongjin <aranet100@gmail.com>
  * @author Gerrit Uitslag <klapinklapin@gmail.com>
  * @author Garam <rowain8@gmail.com>
  * @author Young gon Cha <garmede@gmail.com>
  * @author hyeonsoft <hyeonsoft@live.co.kr>
- * @author Erial <erial2@gmail.com>
  * @author S.H. Lee <tuders@naver.com>
  */
 $lang['encoding']              = 'utf-8';
diff --git a/lib/plugins/acl/lang/ko/lang.php b/lib/plugins/acl/lang/ko/lang.php
index 0227584c78a54eea35ad06a36adff977ea12732c..35f06c4b4179aff1a82ccd1d66ef69714927461c 100644
--- a/lib/plugins/acl/lang/ko/lang.php
+++ b/lib/plugins/acl/lang/ko/lang.php
@@ -7,10 +7,10 @@
  * @author Anika Henke <anika@selfthinker.org>
  * @author Matthias Grimm <matthiasgrimm@users.sourceforge.net>
  * @author jk Lee
- * @author dongnak@gmail.com
+ * @author dongnak <dongnak@gmail.com>
  * @author Song Younghwan <purluno@gmail.com>
  * @author Seung-Chul Yoo <dryoo@live.com>
- * @author erial2@gmail.com
+ * @author erial2 <erial2@gmail.com>
  * @author Myeongjin <aranet100@gmail.com>
  * @author Garam <rowain8@gmail.com>
  */
diff --git a/lib/plugins/config/lang/ko/lang.php b/lib/plugins/config/lang/ko/lang.php
index bcef842072c47a075222e459095c222e9c92bb67..cfca442780004a01373f92fb984425f0d4ce1e00 100644
--- a/lib/plugins/config/lang/ko/lang.php
+++ b/lib/plugins/config/lang/ko/lang.php
@@ -3,13 +3,13 @@
 /**
  * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
  *
+ * @author Seungheon Song <esketch@gmail.com>
  * @author jk Lee
- * @author dongnak@gmail.com
+ * @author dongnak <dongnak@gmail.com>
  * @author Song Younghwan <purluno@gmail.com>
  * @author Seung-Chul Yoo <dryoo@live.com>
- * @author erial2@gmail.com
+ * @author erial2 <erial2@gmail.com>
  * @author Myeongjin <aranet100@gmail.com>
- * @author Erial <erial2@gmail.com>
  * @author S.H. Lee <tuders@naver.com>
  */
 $lang['menu']                  = '환경 설정';
@@ -119,6 +119,7 @@ $lang['subscribe_time']        = '구독 목록과 요약이 보내질 경과 
 $lang['notify']                = '항상 이 이메일 주소로 바뀜 알림을 보냄';
 $lang['registernotify']        = '항상 이 이메일 주소로 새로 등록한 사용자의 정보를 보냄';
 $lang['mailfrom']              = '자동으로 보내는 메일에 사용할 보내는 사람 이메일 주소';
+$lang['mailreturnpath']        = '배달 불가 안내를 위한 수신자 메일 주소';
 $lang['mailprefix']            = '자동으로 보내는 메일에 사용할 이메일 제목 접두어. 위키 제목을 사용하려면 비워 두세요';
 $lang['htmlmail']              = '보기에는 더 좋지만 크키가 조금 더 큰 HTML 태그가 포함된 이메일을 보내기. 일반 텍스트만으로 된 메일을 보내려면 비활성화하세요.';
 $lang['sitemap']               = 'Google 사이트맵 생성 날짜 빈도 (일). 비활성화하려면 0';
@@ -128,6 +129,9 @@ $lang['rss_content']           = 'XML 피드 항목에 보여주는 내용은 
 $lang['rss_update']            = 'XML 피드 업데이트 간격 (초)';
 $lang['rss_show_summary']      = 'XML 피드의 제목에서 요악 보여주기';
 $lang['rss_media']             = '어떤 규격으로 XML 피드에 바뀜을 나열해야 합니까?';
+$lang['rss_media_o_both']      = 'ì–‘ë°©í–¥';
+$lang['rss_media_o_pages']     = '쪽';
+$lang['rss_media_o_media']     = '미디어';
 $lang['updatecheck']           = '업데이트와 보안 경고를 검사할까요? 도쿠위키는 이 기능을 위해 update.dokuwiki.org에 연결이 필요합니다.';
 $lang['userewrite']            = '멋진 URL 사용';
 $lang['useslash']              = 'URL에서 이름공간 구분자로 슬래시 사용';
diff --git a/lib/plugins/popularity/lang/ko/lang.php b/lib/plugins/popularity/lang/ko/lang.php
index fc8b373f60bd5ea543c301213cb1b8816285d372..fff8cac3dcc70e2443b0e410e6c4e985d4fec2c2 100644
--- a/lib/plugins/popularity/lang/ko/lang.php
+++ b/lib/plugins/popularity/lang/ko/lang.php
@@ -4,10 +4,10 @@
  * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
  *
  * @author jk Lee
- * @author dongnak@gmail.com
+ * @author dongnak <dongnak@gmail.com>
  * @author Song Younghwan <purluno@gmail.com>
  * @author Seung-Chul Yoo <dryoo@live.com>
- * @author erial2@gmail.com
+ * @author erial2 <erial2@gmail.com>
  * @author Myeongjin <aranet100@gmail.com>
  * @author Garam <rowain8@gmail.com>
  */
diff --git a/lib/plugins/revert/lang/ko/lang.php b/lib/plugins/revert/lang/ko/lang.php
index 63ca5ebdc0dc3c123eb64d0c41c681a6cf1df10f..f9e16cc0907821fb4309570e5d37f4d4c6578af3 100644
--- a/lib/plugins/revert/lang/ko/lang.php
+++ b/lib/plugins/revert/lang/ko/lang.php
@@ -3,13 +3,13 @@
 /**
  * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
  *
+ * @author Seungheon Song <esketch@gmail.com>
  * @author jk Lee
- * @author dongnak@gmail.com
+ * @author dongnak <dongnak@gmail.com>
  * @author Song Younghwan <purluno@gmail.com>
  * @author Seung-Chul Yoo <dryoo@live.com>
- * @author erial2@gmail.com
+ * @author erial2 <erial2@gmail.com>
  * @author Myeongjin <aranet100@gmail.com>
- * @author Erial <erial2@gmail.com>
  * @author S.H. Lee <tuders@naver.com>
  */
 $lang['menu']                  = '되돌리기 관리자';
diff --git a/lib/plugins/usermanager/lang/ko/lang.php b/lib/plugins/usermanager/lang/ko/lang.php
index 805fda5efe7b6b013baf63a96f5c3eb9e5075981..27d07de1d3bcf9e1e5edb2ef2e716f233a9cb350 100644
--- a/lib/plugins/usermanager/lang/ko/lang.php
+++ b/lib/plugins/usermanager/lang/ko/lang.php
@@ -4,14 +4,13 @@
  * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
  *
  * @author jk Lee
- * @author dongnak@gmail.com
+ * @author dongnak <dongnak@gmail.com>
  * @author Song Younghwan <purluno@gmail.com>
  * @author Seung-Chul Yoo <dryoo@live.com>
- * @author erial2@gmail.com
+ * @author erial2 <erial2@gmail.com>
  * @author Myeongjin <aranet100@gmail.com>
  * @author Gerrit Uitslag <klapinklapin@gmail.com>
  * @author Garam <rowain8@gmail.com>
- * @author Erial <erial2@gmail.com>
  */
 $lang['menu']                  = '사용자 관리자';
 $lang['noauth']                = '(사용자 인증을 사용할 수 없습니다)';