diff --git a/phpBB/install/install_convert.php b/phpBB/install/install_convert.php
index ca3994d129..b8045cb98b 100644
--- a/phpBB/install/install_convert.php
+++ b/phpBB/install/install_convert.php
@@ -569,7 +569,7 @@ class install_convert extends module
 	*/
 	function convert_data($sub)
 	{
-		global $template, $user, $phpbb_root_path, $phpEx, $db, $lang, $config, $cache;
+		global $template, $user, $phpbb_root_path, $phpEx, $db, $lang, $config, $cache, $auth;
 		global $convert, $convert_row, $message_parser, $skip_rows, $language;
 		global $request;
 
@@ -750,7 +750,7 @@ class install_convert extends module
 		}
 
 		$error = false;
-		$convert->fulltext_search = new $search_type($error);
+		$convert->fulltext_search = new $search_type($error, $phpbb_root_path, $phpEx, $auth, $config, $db, $user);
 
 		if ($error)
 		{
diff --git a/phpBB/install/install_install.php b/phpBB/install/install_install.php
index 40dee7b3d7..23593ee51f 100644
--- a/phpBB/install/install_install.php
+++ b/phpBB/install/install_install.php
@@ -1427,7 +1427,7 @@ class install_install extends module
 	*/
 	function build_search_index($mode, $sub)
 	{
-		global $db, $lang, $phpbb_root_path, $phpEx, $config;
+		global $db, $lang, $phpbb_root_path, $phpEx, $config, $auth, $user;
 
 		// Obtain any submitted data
 		$data = $this->get_submitted_data();
@@ -1463,7 +1463,7 @@ class install_install extends module
 		set_config_count(null, null, null, $config);
 
 		$error = false;
-		$search = new phpbb_search_fulltext_native($error);
+		$search = new phpbb_search_fulltext_native($error, $phpbb_root_path, $phpEx, $auth, $config, $db, $user);
 
 		$sql = 'SELECT post_id, post_subject, post_text, poster_id, forum_id
 			FROM ' . POSTS_TABLE;