diff --git a/includes/common.inc b/includes/common.inc
index 6db2e64..cc762ea 100644
--- a/includes/common.inc
+++ b/includes/common.inc
@@ -4976,7 +4976,7 @@ function drupal_page_set_cache() {
         'title' => drupal_get_title(),
         'headers' => array(),
       ),
-      'expire' => CACHE_TEMPORARY,
+      'expire' => variable_get('cache_lifetime', CACHE_TEMPORARY),
       'created' => REQUEST_TIME,
     );