diff --git a/phpBB/phpbb/install/module/install_data/task/create_search_index.php b/phpBB/phpbb/install/module/install_data/task/create_search_index.php
index 864b729ae5..b673367944 100644
--- a/phpBB/phpbb/install/module/install_data/task/create_search_index.php
+++ b/phpBB/phpbb/install/module/install_data/task/create_search_index.php
@@ -125,6 +125,8 @@ class create_search_index extends database_task
 		$this->phpbb_root_path	= $phpbb_root_path;
 		$this->php_ext			= $php_ext;
 
+		$this->posts_table = $container->get_parameter('tables.posts');
+
 		$this->error = false;
 		$this->search_indexer = new fulltext_native(
 			$this->error,