diff --git a/skin/member/neo/ajax_mb_email_check.php b/skin/member/neo/ajax_mb_email_check.php
index 9f2117d6c..3c736a24f 100644
--- a/skin/member/neo/ajax_mb_email_check.php
+++ b/skin/member/neo/ajax_mb_email_check.php
@@ -1,6 +1,6 @@
 <?
 include_once("_common.php");
-include_once($g4['path'].'/lib/register.lib.php');
+include_once(G4_LIB_PATH.'/register.lib.php');
 
 $mb_email = escape_trim($_POST['reg_mb_email']);
 $mb_id    = escape_trim($_POST['reg_mb_id']);
diff --git a/skin/member/neo/ajax_mb_id_check.php b/skin/member/neo/ajax_mb_id_check.php
index 8fa3f02f0..626557547 100644
--- a/skin/member/neo/ajax_mb_id_check.php
+++ b/skin/member/neo/ajax_mb_id_check.php
@@ -1,6 +1,6 @@
 <?
 include_once("_common.php");
-include_once($g4['path'].'/lib/register.lib.php');
+include_once(G4_LIB_PATH.'/register.lib.php');
 
 $mb_id = escape_trim($_POST['reg_mb_id']);
 
diff --git a/skin/member/neo/ajax_mb_nick_check.php b/skin/member/neo/ajax_mb_nick_check.php
index c47659321..1abe0c773 100644
--- a/skin/member/neo/ajax_mb_nick_check.php
+++ b/skin/member/neo/ajax_mb_nick_check.php
@@ -1,6 +1,6 @@
 <?
 include_once("_common.php");
-include_once($g4['path'].'/lib/register.lib.php');
+include_once(G4_LIB_PATH.'/register.lib.php');
 
 $mb_nick = escape_trim($_POST['reg_mb_nick']);
 $mb_id   = escape_trim($_POST['reg_mb_id']);