Index: comment.php
===================================================================
--- comment.php	(revision 17231)
+++ comment.php	(working copy)
@@ -32,11 +32,10 @@
  * @since 2.0.0
  */
 function edit_comment() {
-	$comment_post_ID = (int) $_POST['comment_post_ID'];
+	
+	if (!current_user_can( 'edit_comment', (int)$_POST['comment_ID'] ))
+		wp_die( __('You do not have sufficient permissions to edit this comment' ) );
 
-	if (!current_user_can( 'edit_post', $comment_post_ID ))
-		wp_die( __('You are not allowed to edit comments on this post, so you cannot edit this comment.' ) );
-
 	$_POST['comment_author'] = $_POST['newcomment_author'];
 	$_POST['comment_author_email'] = $_POST['newcomment_author_email'];
 	$_POST['comment_author_url'] = $_POST['newcomment_author_url'];