diff --git a/phpBB/includes/search/fulltext_mysql.php b/phpBB/includes/search/fulltext_mysql.php
index 54e2007da3..69f76ba99e 100644
--- a/phpBB/includes/search/fulltext_mysql.php
+++ b/phpBB/includes/search/fulltext_mysql.php
@@ -547,7 +547,7 @@ class phpbb_search_fulltext_mysql extends phpbb_search_base
 	* @param	int			$per_page			number of ids each page is supposed to contain
 	* @return	boolean|int						total number of results
 	*/
-	public function author_search($type, $firstpost_only, $sort_by_sql, $sort_key, $sort_dir, $sort_days, $ex_fid_ary, $m_approve_fid_ary, $topic_id, $author_ary, $author_name, &$id_ary, $start, $per_page)
+	public function author_search($type, $firstpost_only, $sort_by_sql, $sort_key, $sort_dir, $sort_days, $ex_fid_ary, $m_approve_fid_ary, $topic_id, $author_ary, $author_name, &$id_ary, &$start, $per_page)
 	{
 		// No author? No posts
 		if (!sizeof($author_ary))
@@ -578,7 +578,7 @@ class phpbb_search_fulltext_mysql extends phpbb_search_base
 
 		// try reading the results from cache
 		$result_count = 0;
-		if ($this->obtain_ids($search_key, $result_count, $id_ary, $start, $per_page, $sort_dir) == SEARCH_RESULT_IN_CACHE)
+		if ($this->obtain_ids($search_key, $result_count, $id_ary, &$start, $per_page, $sort_dir) == SEARCH_RESULT_IN_CACHE)
 		{
 			return $result_count;
 		}