diff --git a/adm/dbupgrade.php b/adm/dbupgrade.php
index 78c0c8e60..f1210db76 100644
--- a/adm/dbupgrade.php
+++ b/adm/dbupgrade.php
@@ -82,11 +82,13 @@ while ($row = sql_fetch_array($result)) {
 
     $row = sql_fetch("select * from {$write_table} limit 1");
 
-    if(! isset($row['wr_unique'])){
+    if( $row && ! isset($row['wr_seo_title'])){
         sql_query("ALTER TABLE `{$write_table}`
                     ADD `wr_seo_title` varchar(255) NOT NULL DEFAULT '' AFTER `wr_content`,
                     ADD INDEX `wr_seo_title` (`wr_seo_title`);
-        ", true);
+        ", false);
+
+        $is_check = true;
     }
 }
 
diff --git a/install/install_db.php b/install/install_db.php
index 9f5991a55..697a01095 100644
--- a/install/install_db.php
+++ b/install/install_db.php
@@ -11,6 +11,10 @@ header('Pragma: no-cache'); // HTTP/1.0
 
 include_once ('../config.php');
 include_once ('../lib/common.lib.php');
+include_once('../lib/hook.lib.php');    // hook 함수 파일
+include_once('../lib/get_data.lib.php');    
+include_once('../lib/uri.lib.php');    // URL 함수 파일
+include_once('../lib/cache.lib.php');
 
 if( ! function_exists('safe_install_string_check') ){
     function safe_install_string_check( $str ) {