diff --git a/modules/aggregator/aggregator.api.php b/modules/aggregator/aggregator.api.php
index f31413c..e44fc15 100644
--- a/modules/aggregator/aggregator.api.php
+++ b/modules/aggregator/aggregator.api.php
@@ -97,12 +97,12 @@ function hook_aggregator_fetch_info() {
  *   $item[key-name] = value;
  *
  *   Recognized keys:
- *   TITLE (string) - the title of a feed item
- *   DESCRIPTION (string) - the description (body text) of a feed item
- *   TIMESTAMP (UNIX timestamp) - the feed item's published time as UNIX timestamp
- *   AUTHOR (string) - the feed item's author
- *   GUID (string) - RSS/Atom global unique identifier
- *   LINK (string) - the feed item's URL
+ *   title (string) - the title of a feed item
+ *   description (string) - the description (body text) of a feed item
+ *   timestamp (UNIX timestamp) - the feed item's published time as UNIX timestamp
+ *   author (string) - the feed item's author
+ *   guid (string) - RSS/Atom global unique identifier
+ *   link (string) - the feed item's URL
  *
  * @return
  *   TRUE if parsing was successful, FALSE otherwise.