diff --git a/wp-admin/admin-ajax.php b/wp-admin/admin-ajax.php
index ca3b56342..aa5b6f3b0 100644
--- a/wp-admin/admin-ajax.php
+++ b/wp-admin/admin-ajax.php
@@ -517,8 +517,8 @@ case 'replyto-comment' :
 
 	if ( empty($status) )
 		die('1');
-	elseif ( in_array($status->post_status, array('draft', 'pending') ) )
-		die( __('Error: you are replying to comment on a draft post.') );
+	elseif ( in_array($status, array('draft', 'pending') ) )
+		die( __('Error: you are replying to a comment on a draft post.') );
 
 	$user = wp_get_current_user();
 	if ( $user->ID ) {
diff --git a/wp-includes/comment.php b/wp-includes/comment.php
index 3f0f064db..1ccb236c1 100644
--- a/wp-includes/comment.php
+++ b/wp-includes/comment.php
@@ -849,6 +849,8 @@ function wp_insert_comment($commentdata) {
 		$comment_approved = 1;
 	if ( ! isset($user_id) )
 		$user_id = 0;
+	if ( ! isset($comment_type) )
+		$comment_type = '';
 
 	$result = $wpdb->query( $wpdb->prepare("INSERT INTO $wpdb->comments
 	(comment_post_ID, comment_author, comment_author_email, comment_author_url, comment_author_IP, comment_date, comment_date_gmt, comment_content, comment_approved, comment_agent, comment_type, comment_parent, user_id)