diff --git a/html/toggletheme.php b/html/toggletheme.php
index 7619364..aedcbbb 100644
--- a/html/toggletheme.php
+++ b/html/toggletheme.php
@@ -1,6 +1,6 @@
 <?php
   $cookie_data = array(
-    "expires" => "Tue, 31 Dec 2069 23:59:59 GMT",
+    "expires" => mktime (23, 59, 59, 12, 31, 2069),
     "domain" => ".slackware.uk",
     "path" => "/",
     "httponly" => true,