diff --git a/adm/board_copy_update.php b/adm/board_copy_update.php
index 7fc7452bd..ed4e1370d 100644
--- a/adm/board_copy_update.php
+++ b/adm/board_copy_update.php
@@ -68,7 +68,7 @@ $sql = " insert into {$g4['board_table']}
                 bo_hot = '{$board[bo_hot]}',
                 bo_image_width = '{$board[bo_image_width]}',
                 bo_skin = '{$board['bo_skin']}',
-                bo_mobile_skin = '{$board['bo_mobile']}',
+                bo_mobile_skin = '{$board['bo_mobile_skin']}',
                 bo_include_head = '{$board['bo_include_head']}',
                 bo_include_tail = '{$board['bo_include_tail']}',
                 bo_content_head = '".addslashes($board['bo_content_head'])."',