diff --git a/adm/board_copy_update.php b/adm/board_copy_update.php
index 4eaab6076..e89c4468b 100644
--- a/adm/board_copy_update.php
+++ b/adm/board_copy_update.php
@@ -43,7 +43,6 @@ $sql = " insert into {$g5['board_table']}
                 bo_download_level = '{$board[bo_download_level]}',
                 bo_html_level = '{$board[bo_html_level]}',
                 bo_link_level = '{$board[bo_link_level]}',
-                bo_trackback_level = '{$board[bo_trackback_level]}',
                 bo_count_modify = '{$board[bo_count_modify]}',
                 bo_count_delete = '{$board[bo_count_delete]}',
                 bo_read_point = '{$board[bo_read_point]}',
diff --git a/adm/sql_write.sql b/adm/sql_write.sql
index f943b0453..21cad8d7f 100644
--- a/adm/sql_write.sql
+++ b/adm/sql_write.sql
@@ -14,7 +14,6 @@ CREATE TABLE `__TABLE_NAME__` (
   `wr_link2` text NOT NULL,
   `wr_link1_hit` int(11) NOT NULL DEFAULT '0',
   `wr_link2_hit` int(11) NOT NULL DEFAULT '0',
-  `wr_trackback` varchar(255) NOT NULL,
   `wr_hit` int(11) NOT NULL DEFAULT '0',
   `wr_good` int(11) NOT NULL DEFAULT '0',
   `wr_nogood` int(11) NOT NULL DEFAULT '0',
diff --git a/install/gnuboard5.sql b/install/gnuboard5.sql
index cc177af55..986aaa475 100644
--- a/install/gnuboard5.sql
+++ b/install/gnuboard5.sql
@@ -35,7 +35,6 @@ CREATE TABLE IF NOT EXISTS `g5_board` (
   `bo_download_level` tinyint(4) NOT NULL DEFAULT '0',
   `bo_html_level` tinyint(4) NOT NULL DEFAULT '0',
   `bo_link_level` tinyint(4) NOT NULL DEFAULT '0',
-  `bo_trackback_level` tinyint(4) NOT NULL DEFAULT '0',
   `bo_count_delete` tinyint(4) NOT NULL DEFAULT '0',
   `bo_count_modify` tinyint(4) NOT NULL DEFAULT '0',
   `bo_read_point` int(11) NOT NULL DEFAULT '0',
@@ -55,7 +54,6 @@ CREATE TABLE IF NOT EXISTS `g5_board` (
   `bo_use_name` tinyint(4) NOT NULL DEFAULT '0',
   `bo_use_signature` tinyint(4) NOT NULL DEFAULT '0',
   `bo_use_ip_view` tinyint(4) NOT NULL DEFAULT '0',
-  `bo_use_trackback` tinyint(4) NOT NULL DEFAULT '0',
   `bo_use_list_view` tinyint(4) NOT NULL DEFAULT '0',
   `bo_use_list_file` tinyint(4) NOT NULL DEFAULT '0',
   `bo_use_list_content` tinyint(4) NOT NULL DEFAULT '0',