Index: wp-admin/edit-form-advanced.php
===================================================================
--- wp-admin/edit-form-advanced.php	(revision 24245)
+++ wp-admin/edit-form-advanced.php	(working copy)
@@ -188,6 +188,8 @@
 		)
 	);
 
+	$all_post_formats = apply_filters( 'all_post_formats', $all_post_formats );
+
 	foreach ( $all_post_formats as $slug => $attr ) {
 		$class = '';
 		if ( $post_format == $slug ) {