diff --git a/application/config/config.php b/application/config/config.php
index 86ca312..f4ba70a 100644
--- a/application/config/config.php
+++ b/application/config/config.php
@@ -284,8 +284,15 @@
 | Cache Include Query String
 |--------------------------------------------------------------------------
 |
-| Set this to TRUE if you want to use different cache files depending on the
-| URL query string.  Please be aware this might result in numerous cache files.
+| Whether to take the URL query string into consideration when generating
+| output cache files. Valid options are:
+|
+|	FALSE      = Disabled
+|	TRUE       = Enabled, take all query parameters into account.
+|	             Please be aware that this may result in numerous cache
+|	             files generated for the same page over and over again.
+|	array('q') = Enabled, but only take into account the specified list
+|	             of query parameters.
 |
 */
 $config['cache_query_string'] = FALSE;