diff --git a/src/wp-includes/admin-bar.php b/src/wp-includes/admin-bar.php
index b9c7872d0cc07..af534a47b414d 100644
--- a/src/wp-includes/admin-bar.php
+++ b/src/wp-includes/admin-bar.php
@@ -812,7 +812,7 @@ function wp_admin_bar_edit_menu( $wp_admin_bar ) {
 		$post             = get_post();
 		$post_type_object = null;
 
-		if ( 'post' === $current_screen->base ) {
+		if ( 'post' === $current_screen->base && isset( $post ) ) {
 			$post_type_object = get_post_type_object( $post->post_type );
 		} elseif ( 'edit' === $current_screen->base ) {
 			$post_type_object = get_post_type_object( $current_screen->post_type );