diff --git a/AUTHORS b/AUTHORS
index 891b559..f54316c 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -1 +1,2 @@
 Daniel Juyung Seo <seojuyung2@gmail.com>
+Jiyoung Choi <joi729@hanmail.net>
diff --git a/COPYING b/COPYING
index a3c26c6..cbb9681 100644
--- a/COPYING
+++ b/COPYING
@@ -1,6 +1,6 @@
 Copyright notice for Elm Theme Viewer:
 
-Copyright (C) 2012-2012 Daniel Juyung Seo.
+Copyright (C) 2012-2012 Daniel Juyung Seo and others.
 
 All rights reserved.
 
diff --git a/README b/README
index c5eff75..a530dfd 100644
--- a/README
+++ b/README
@@ -1,6 +1,6 @@
 elm-theme-viewer
 ===============================================================================
-Author: Daniel Juyung Seo (SeoZ)
+Author: Daniel Juyung Seo (SeoZ) and others
 
 Elm Theme Viewer is an EFL(Enlightenment Foundation Libraries) elementary
 widget preview program. It lists all widgets and styles from the theme.  It
diff --git a/src/main.c b/src/main.c
index 306447c..417d6e9 100644
--- a/src/main.c
+++ b/src/main.c
@@ -10,7 +10,7 @@ static const Ecore_Getopt options = {
    PACKAGE_NAME,
    "%prog [options]",
    PACKAGE_VERSION,
-   "(C) 2012-2013 Daniel Juyung Seo",
+   "(C) 2012-2013 Daniel Juyung Seo and others",
    "BSD 2-Clause",
    "Elementary theme previewer witten with Enlightenment Foundation Libraries.",
    EINA_TRUE,