diff --git a/adm/shop_admin/configform.php b/adm/shop_admin/configform.php
index 28a2915cc..c68cd587e 100644
--- a/adm/shop_admin/configform.php
+++ b/adm/shop_admin/configform.php
@@ -1588,7 +1588,7 @@ function fconfig_check(f)
             echo '</script>'.PHP_EOL;
         }
 
-        if (!function_exists('mcrypt_cbc')) {
+        if (!function_exists('mcrypt_module_open')) {
             echo '<script>'.PHP_EOL;
             echo 'alert("MCRYPT 관련 함수를 사용할 수 없습니다.\n서버 관리자에게 문의해 주십시오.");'.PHP_EOL;
             echo '</script>'.PHP_EOL;