diff --git src/wp-admin/includes/ajax-actions.php src/wp-admin/includes/ajax-actions.php
index ff2db70..3daf0fa 100644
--- src/wp-admin/includes/ajax-actions.php
+++ src/wp-admin/includes/ajax-actions.php
@@ -936,6 +936,7 @@ function wp_ajax_replyto_comment( $action ) {
 		$comment_author_email = wp_slash( $user->user_email );
 		$comment_author_url   = wp_slash( $user->user_url );
 		$comment_content      = trim($_POST['content']);
+		$comment_type = isset( $_POST['comment_type'] ) ? trim($_POST['comment_type']) : '';
 		if ( current_user_can( 'unfiltered_html' ) ) {
 			if ( ! isset( $_POST['_wp_unfiltered_html_comment'] ) )
 				$_POST['_wp_unfiltered_html_comment'] = '';