diff --git a/src/js/_enqueues/wp/updates.js b/src/js/_enqueues/wp/updates.js
index 367bdf0284..ee5bf3cc58 100644
--- a/src/js/_enqueues/wp/updates.js
+++ b/src/js/_enqueues/wp/updates.js
@@ -2416,7 +2416,7 @@
 		 */
 		$( window ).on( 'message', function( event ) {
 			var originalEvent  = event.originalEvent,
-				expectedOrigin = document.location.protocol + '//' + document.location.hostname,
+				expectedOrigin = document.location.protocol + '//' + document.location.host,
 				message;
 
 			if ( originalEvent.origin !== expectedOrigin ) {