Index: src/wp-includes/cron.php
===================================================================
--- src/wp-includes/cron.php	(revision 36227)
+++ src/wp-includes/cron.php	(working copy)
@@ -312,6 +312,7 @@
 	 *         @type bool $sslverify Whether SSL should be verified for the request. Default false.
 	 *     }
 	 * }
+	 * @param string $doing_wp_cron The unix timestamp of the cron lock.
 	 */
 	$cron_request = apply_filters( 'cron_request', array(
 		'url'  => add_query_arg( 'doing_wp_cron', $doing_wp_cron, site_url( 'wp-cron.php' ) ),
@@ -322,7 +323,7 @@
 			/** This filter is documented in wp-includes/class-wp-http-streams.php */
 			'sslverify' => apply_filters( 'https_local_ssl_verify', false )
 		)
-	) );
+	), $doing_wp_cron );
 
 	wp_remote_post( $cron_request['url'], $cron_request['args'] );
 }