diff --git a/common.inc b/common.inc
index dfd6c4f..6749d40 100644
--- a/common.inc
+++ b/common.inc
@@ -2701,7 +2701,7 @@ function page_set_cache() {
         $data = gzencode($data, 9, FORCE_GZIP);
       }
       ob_end_flush();
-      cache_set($base_root . request_uri(), $data, 'cache_page', CACHE_TEMPORARY, drupal_get_headers());
+      cache_set($base_root . request_uri(), $data, 'cache_page', variable_get('cache_lifetime', CACHE_TEMPORARY), drupal_get_headers());
     }
   }
 }