Index: edit-attachment-rows.php
===================================================================
--- edit-attachment-rows.php	(revision 13221)
+++ edit-attachment-rows.php	(working copy)
@@ -71,7 +71,7 @@
 				if ( $is_trash ) echo $thumb;
 				else {
 ?>
-				<a href="media.php?action=edit&amp;attachment_id=<?php the_ID(); ?>" title="<?php echo esc_attr(sprintf(__('Edit &#8220;%s&#8221;'), $att_title)); ?>">
+				<a href="<?php get_edit_post_link($post->ID, true); ?>" title="<?php echo esc_attr(sprintf(__('Edit &#8220;%s&#8221;'), $att_title)); ?>">
 					<?php echo $thumb; ?>
 				</a>