diff --git a/install/install_db.php b/install/install_db.php
index 1ff636c57..0e22db14f 100644
--- a/install/install_db.php
+++ b/install/install_db.php
@@ -215,7 +215,7 @@ if($g5_install || !$result) {
     // 관리자 회원가입
     $sql = " insert into `{$table_prefix}member`
                 set mb_id = '$admin_id',
-                     mb_password = PASSWORD('$admin_pass'),
+                     mb_password = '".get_encrypt_string($admin_pass)."',
                      mb_name = '$admin_name',
                      mb_nick = '$admin_name',
                      mb_email = '$admin_email',