diff --git a/css/default.css b/css/default.css
index 7f5d765be..c498d85bb 100644
--- a/css/default.css
+++ b/css/default.css
@@ -126,7 +126,7 @@ a:active {color:#000;text-decoration:underline}
 #ft_copy a {position:absolute;top:10px;right:0;color:#fff}
 
 /* Mobile화면으로 */
-#g4s_cng {display:block;margin:0.3em;padding:0.5em 0;border:1px solid #eee;border-radius:2em;background:#fff;color:#000;font-size:2em;text-decoration:none;text-align:center}
+#device_change {display:block;margin:0.3em;padding:0.5em 0;border:1px solid #eee;border-radius:2em;background:#fff;color:#000;font-size:2em;text-decoration:none;text-align:center}
 
 /* 콘텐츠별 스타일 */
 .cnt_cmt {display:inline-block;margin:0 0 0 3px;font-weight:bold}
diff --git a/css/mobile.css b/css/mobile.css
index 2e3b17041..8fa47438b 100644
--- a/css/mobile.css
+++ b/css/mobile.css
@@ -97,7 +97,7 @@ pre {overflow-x:scroll;font-size:1.1em}
 #ft_copy a {color:#fff;text-decoration:none}
 
 /* PC화면으로 */
-#g4s_cng {display:block;margin:0.3em;padding:0.5em 0;border:1px solid #eee;border-radius:2em;color:#000;font-size:1em;text-decoration:none;text-align:center}
+#device_change {display:block;margin:0.3em;padding:0.5em 0;border:1px solid #eee;border-radius:2em;color:#000;font-size:1em;text-decoration:none;text-align:center}
 
 /* 버튼 */
 .btn01 {display:inline-block;padding:0 0.5em;height:2em;border:1px solid #ccc !important;background:#fafafa !important;color:#000 !important;font-size:1em;text-decoration:none !important;line-height:2em;vertical-align:middle}
diff --git a/mobile/tail.php b/mobile/tail.php
index 5ac910a8e..1bb72205f 100644
--- a/mobile/tail.php
+++ b/mobile/tail.php
@@ -40,7 +40,7 @@ if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
     </div>
 </footer>
 
-<a href="<?php echo $_SERVER['PHP_SELF'].($_SERVER['QUERY_STRING']?'?'.$_SERVER['QUERY_STRING'].'&amp;':'?').'device=pc'; ?>" id="g4s_cng">PC 버전으로 보기</a>
+<a href="<?php echo $_SERVER['PHP_SELF'].($_SERVER['QUERY_STRING']?'?'.$_SERVER['QUERY_STRING'].'&amp;':'?').'device=pc'; ?>" id="device_change">PC 버전으로 보기</a>
 
 <?php
 include_once(G4_PATH."/tail.sub.php");
diff --git a/tail.php b/tail.php
index 6cb8f2f52..96c4e1c80 100644
--- a/tail.php
+++ b/tail.php
@@ -33,7 +33,7 @@ if ($config['cf_include_tail']) {
 </footer>
 
 <?php if(!G4_IS_MOBILE){ ?>
-<a href="<?php echo $_SERVER['PHP_SELF'].($_SERVER['QUERY_STRING']?'?'.$_SERVER['QUERY_STRING'].'&amp;':'?').'device=mobile'; ?>" id="g4s_cng">모바일 버전으로 보기</a>
+<a href="<?php echo $_SERVER['PHP_SELF'].($_SERVER['QUERY_STRING']?'?'.$_SERVER['QUERY_STRING'].'&amp;':'?').'device=mobile'; ?>" id="device_change">모바일 버전으로 보기</a>
 <?php } ?>
 
 <?php