diff --git a/phpBB/includes/functions_display.php b/phpBB/includes/functions_display.php
index ab003f8c65..fdcc118269 100644
--- a/phpBB/includes/functions_display.php
+++ b/phpBB/includes/functions_display.php
@@ -237,7 +237,7 @@ function display_forums($root_data = '', $display_moderators = true, $return_mod
 	// Handle marking posts
 	if ($mark_read == 'forums' || $mark_read == 'all')
 	{
-		$redirect = build_url('mark', 'hash');
+		$redirect = build_url(array('mark', 'hash'));
 		$token = request_var('hash', '');
 		if (check_link_hash($token, 'global'))
 		{