diff --git a/wp-comments-post.php b/wp-comments-post.php
index ef49b8875f..6e7cdef104 100644
--- a/wp-comments-post.php
+++ b/wp-comments-post.php
@@ -48,9 +48,11 @@ $commentdata = compact('comment_post_ID', 'comment_author', 'comment_author_emai
 
 wp_new_comment($commentdata);
 
-setcookie('comment_author_' . COOKIEHASH, stripslashes($comment_author), time() + 30000000, COOKIEPATH);
-setcookie('comment_author_email_' . COOKIEHASH, stripslashes($comment_author_email), time() + 30000000, COOKIEPATH);
-setcookie('comment_author_url_' . COOKIEHASH, stripslashes($comment_author_url), time() + 30000000, COOKIEPATH);
+if ( !$user_ID ) :
+	setcookie('comment_author_' . COOKIEHASH, stripslashes($comment_author), time() + 30000000, COOKIEPATH, COOKIE_DOMAIN);
+	setcookie('comment_author_email_' . COOKIEHASH, stripslashes($comment_author_email), time() + 30000000, COOKIEPATH, COOKIE_DOMAIN);
+	setcookie('comment_author_url_' . COOKIEHASH, stripslashes($comment_author_url), time() + 30000000, COOKIEPATH, COOKIE_DOMAIN);
+endif;
 
 nocache_headers();