Index: branches/version-2/data/class/pages/mypage/LC_Page_Mypage_DeliveryAddr.php
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--- branches/version-2/data/class/pages/mypage/LC_Page_Mypage_DeliveryAddr.php	(revision 17694)
+++ branches/version-2/data/class/pages/mypage/LC_Page_Mypage_DeliveryAddr.php	(revision 17697)
@@ -123,5 +123,5 @@
                     //別のお届け先登録数の取得
                     $deliv_count = $objQuery->count("dtb_other_deliv", "customer_id=?", array($objCustomer->getValue('customer_id')));
-                    if ($deliv_count < DELIV_ADDR_MAX or strlen($_POST['other_deliv_id'])){
+                    if ($deliv_count < DELIV_ADDR_MAX or isset($_POST['other_deliv_id'])){
                         if(strlen($_POST['other_deliv_id'] != 0)){
                             $deliv_count = $objQuery->count("dtb_other_deliv","customer_id=? and other_deliv_id = ?" ,array($objCustomer->getValue('customer_id'), $_POST['other_deliv_id']));