diff --git a/wp-includes/sitemaps/providers/class-wp-sitemaps-posts.php b/wp-includes/sitemaps/providers/class-wp-sitemaps-posts.php
index e03af6e357..56acfb7697 100644
--- a/wp-includes/sitemaps/providers/class-wp-sitemaps-posts.php
+++ b/wp-includes/sitemaps/providers/class-wp-sitemaps-posts.php
@@ -174,7 +174,8 @@ class WP_Sitemaps_Posts extends WP_Sitemaps_Provider {
 
 		$query = new WP_Query( $args );
 
-		return isset( $query->max_num_pages ) ? $query->max_num_pages : 1;
+		$min_num_pages = ( 'page' === $post_type && 'posts' === get_option( 'show_on_front' ) ) ? 1 : 0;
+		return isset( $query->max_num_pages ) ? max( $min_num_pages, $query->max_num_pages ) : 1;
 	}
 
 	/**
diff --git a/wp-includes/version.php b/wp-includes/version.php
index f163a53edc..cb7a2b4999 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-beta1-48475';
+$wp_version = '5.5-beta1-48476';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.