Index: wp-admin/edit-tags.php
===================================================================
--- wp-admin/edit-tags.php	(revision 13020)
+++ wp-admin/edit-tags.php	(working copy)
@@ -329,9 +329,7 @@
 </div>
 
 <?php 
-if ( 'category' == $taxonomy ) 
-	do_action('add_category_form_fields');
-else
+if ( 'category' != $taxonomy )
 	do_action('add_tag_form_fields', $taxonomy);
 do_action('add_' . $taxonomy . '_form_fields', $taxonomy);
 ?>