diff --git a/wp-admin/admin-ajax.php b/wp-admin/admin-ajax.php
index 0dca1d1996..81e01970b7 100644
--- a/wp-admin/admin-ajax.php
+++ b/wp-admin/admin-ajax.php
@@ -62,7 +62,7 @@ case 'fetch-list' :
 		$table->ajax_response();
 	}
 
-	die('-1');
+	die('0');
 	break;
 case 'ajax-tag-search' :
 	if ( !current_user_can( 'edit_posts' ) )
diff --git a/wp-admin/includes/template.php b/wp-admin/includes/template.php
index 4bbaad8289..b4a0d08e66 100644
--- a/wp-admin/includes/template.php
+++ b/wp-admin/includes/template.php
@@ -1814,7 +1814,7 @@ function screen_options($screen) {
 		case 'edit':
 		case 'edit-pages':
 			$post_type = 'post';
-			if ( isset($_GET['post_type']) && in_array( $_GET['post_type'], get_post_types( array('public' => true ) ) ) )
+			if ( isset($_GET['post_type']) && in_array( $_GET['post_type'], get_post_types( array( 'show_ui' => true ) ) ) )
 				$post_type = $_GET['post_type'];
 			$post_type_object = get_post_type_object($post_type);
 			$per_page_label = $post_type_object->labels->name;