diff --git a/includes/cache.inc b/includes/cache.inc
index 7f152f0..67897fd 100644
--- a/includes/cache.inc
+++ b/includes/cache.inc
@@ -100,8 +100,7 @@ function cache_get_multiple(array &$cids, $bin = 'cache') {
  *   serialized before insertion. Strings will be stored as plain text and are
  *   not serialized.
  * @param $bin
- *   The cache bin to store the data in. Valid core values (with bins that
- *   should not be flushed before their expire time marked with *) are:
+ *   The cache bin to store the data in. Valid core values are:
  *   - cache: (default) Generic cache storage bin (used for variables, theme
  *     registry, locale date, list of simpletest tests etc).
  *   - cache_block: Stores the content of various blocks.
@@ -112,7 +111,7 @@ function cache_get_multiple(array &$cids, $bin = 'cache') {
  *   - cache_filter: Stores filtered pieces of content.
  *   - cache_form(*): Stores multistep forms. Flushing this bin means that some
  *     forms displayed to users lose their state and the data already submitted
- *     to them.
+ *     to them. This bin should not be flushed before its expired time.
  *   - cache_menu: Stores the structure of visible navigation menus per page.
  *   - cache_page: Stores generated pages for anonymous users. It is flushed
  *     very often, whenever a page changes, at least for every node and comment