Index: general-template.php
===================================================================
--- general-template.php	(revision 15830)
+++ general-template.php	(working copy)
@@ -650,7 +650,7 @@
  * @param bool $display Optional, default is true. Whether to display or retrieve title.
  * @return string|null Title when retrieving, null when displaying or failure.
  */
-function post_type_archive_title() {
+function post_type_archive_title( $prefix = '', $display = true ) {
 	if ( ! is_post_type_archive() )
 		return;