diff --git a/install/install_db.php b/install/install_db.php
index 807ce765b..352325caf 100644
--- a/install/install_db.php
+++ b/install/install_db.php
@@ -382,6 +382,10 @@ if($shop_install) {
         $sql = preg_replace($source, $target, $sql);
         @mysql_query($sql);
     }
+
+    // mb_mileage 필드추가
+    sql_query(" ALTER TABLE `{$table_prefix}member`
+                    ADD `mb_mileage` INT(11) NOT NULL DEFAULT '0' AFTER `mb_point` ", false);
 }
 ?>