diff --git a/wp-includes/pluggable-functions.php b/wp-includes/pluggable-functions.php
index 2ec3a81126..8a76ff380c 100644
--- a/wp-includes/pluggable-functions.php
+++ b/wp-includes/pluggable-functions.php
@@ -245,7 +245,6 @@ function wp_notify_moderator($comment_id) {
     
 	$comment = $wpdb->get_row("SELECT * FROM $wpdb->comments WHERE comment_ID='$comment_id' LIMIT 1");
 	$post = $wpdb->get_row("SELECT * FROM $wpdb->posts WHERE ID='$comment->comment_post_ID' LIMIT 1");
-	$user = $wpdb->get_row("SELECT * FROM $wpdb->users WHERE ID='$post->post_author' LIMIT 1");
 
 	$comment_author_domain = gethostbyaddr($comment->comment_author_IP);
 	$comments_waiting = $wpdb->get_var("SELECT count(comment_ID) FROM $wpdb->comments WHERE comment_approved = '0'");