diff --git a/adm/mail_select_list.php b/adm/mail_select_list.php
index 67689863b..db05cca50 100644
--- a/adm/mail_select_list.php
+++ b/adm/mail_select_list.php
@@ -94,7 +94,7 @@ include_once('./admin.head.php');
     while ($row=sql_fetch_array($result)) {
         $i++;
         $ma_list .= $cr . $row['mb_email'] . "||" . $row['mb_id'] . "||" . $row['mb_name'] . "||" . $row['mb_nick'] . "||" . $row['mb_datetime'];
-        $cr = '\n';
+        $cr = "\n";
 
         $bg = 'bg'.($i%2);
     ?>
diff --git a/adm/mail_select_update.php b/adm/mail_select_update.php
index 90f720e40..c87adc123 100644
--- a/adm/mail_select_update.php
+++ b/adm/mail_select_update.php
@@ -36,7 +36,7 @@ $ma_id = trim($_POST['ma_id']);
 $select_member_list = trim($_POST['ma_list']);
 
 //print_r2($_POST); EXIT;
-$member_list = explode('\n', conv_unescape_nl($select_member_list));
+$member_list = explode("\n", conv_unescape_nl($select_member_list));
 
 // 메일내용 가져오기
 $sql = "select ma_subject, ma_content from {$g5['mail_table']} where ma_id = '$ma_id' ";
diff --git a/lib/common.lib.php b/lib/common.lib.php
index 2d59c429f..978f38e09 100644
--- a/lib/common.lib.php
+++ b/lib/common.lib.php
@@ -2619,8 +2619,8 @@ function conv_date_format($format, $date, $add='')
 // unescape nl 얻기
 function conv_unescape_nl($str)
 {
-    $search = array('\\r', '\\\n', '\\n', '\r');
-    $replace = array('', '\n', '\n', '');
+    $search = array('\\r', '\r', '\\n', '\n');
+    $replace = array('', '', "\n", "\n");
 
     return str_replace($search, $replace, $str);
 }