diff --git a/inc/sitemaps/class-sitemaps-renderer.php b/inc/sitemaps/class-sitemaps-renderer.php
index 255d44902f3..1b0adf1976b 100644
--- a/inc/sitemaps/class-sitemaps-renderer.php
+++ b/inc/sitemaps/class-sitemaps-renderer.php
@@ -339,7 +339,8 @@ protected function encode_url_rfc3986( $url ) {
 	 */
 	protected function get_xsl_url() {
 		if ( home_url() !== site_url() ) {
-			return home_url( 'main-sitemap.xsl' );
+			$sitemap_public_url = home_url( 'main-sitemap.xsl' );
+			return apply_filter('sitemap_public_url', $sitemap_public_url);
 		}
 
 		/*