diff --git a/phpBB/includes/constants.php b/phpBB/includes/constants.php
index cbe488fccc..8ef1a4655d 100644
--- a/phpBB/includes/constants.php
+++ b/phpBB/includes/constants.php
@@ -262,6 +262,7 @@ define('SITELIST_TABLE',			$table_prefix . 'sitelist');
 define('SMILIES_TABLE',				$table_prefix . 'smilies');
 define('STYLES_TABLE',				$table_prefix . 'styles');
 define('STYLES_TEMPLATE_TABLE',		$table_prefix . 'styles_template');
+define('STYLES_TEMPLATE_DATA_TABLE',$table_prefix . 'styles_template_data');
 define('STYLES_THEME_TABLE',		$table_prefix . 'styles_theme');
 define('STYLES_IMAGESET_TABLE',		$table_prefix . 'styles_imageset');
 define('STYLES_IMAGESET_DATA_TABLE',$table_prefix . 'styles_imageset_data');