diff --git a/src/wp-includes/ms-functions.php b/src/wp-includes/ms-functions.php
index f1cbc62fa8ec7..61dcbc23fa732 100644
--- a/src/wp-includes/ms-functions.php
+++ b/src/wp-includes/ms-functions.php
@@ -2785,7 +2785,7 @@ function update_network_option_new_admin_email( $old_value, $value ) {
 		return;
 	}
 
-	$hash            = md5( $value . time() . mt_rand() );
+	$hash            = md5( $value . time() . wp_rand() );
 	$new_admin_email = array(
 		'hash'     => $hash,
 		'newemail' => $value,