diff --git a/wp-includes/revision.php b/wp-includes/revision.php
index 3bf3171379..bef1d0b44b 100644
--- a/wp-includes/revision.php
+++ b/wp-includes/revision.php
@@ -582,7 +582,7 @@ function _show_post_preview() {
 		$id = (int) $_GET['preview_id'];
 
 		if ( false === wp_verify_nonce( $_GET['preview_nonce'], 'post_preview_' . $id ) ) {
-			wp_die( __( 'Sorry, you are not allowed to preview drafts.' ) );
+			wp_die( __( 'Sorry, you are not allowed to preview drafts.' ), 403 );
 		}
 
 		add_filter( 'the_preview', '_set_preview' );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 87146763f5..36831116e6 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.1-beta1-44609';
+$wp_version = '5.1-beta1-44610';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.