--- a/calendar/base/public/calIDateTime.idl
+++ b/calendar/base/public/calIDateTime.idl
@@ -69,18 +69,18 @@ interface calIDateTime : nsISupports
    */
   // true if this thing is set/valid
   readonly attribute boolean isValid;
 
   /**
    * nativeTime contains this instance's PRTime value relative
    * to the UTC epoch, regardless of the timezone that's set
    * on this instance.  If nativeTime is set, the given UTC PRTime
-   * value is exploded into year/month/etc, taking into account
-   * the timezone setting.
+   * value is exploded into year/month/etc, forcing the timezone
+   * setting to UTC.
    *
    * @warning: When the timezone is set to 'floating', this will return
    * the nativeTime as-if the timezone was UTC. Take this into account
    * when comparing values.
    *
    * @note on objects that are pinned to a timezone and have isDate set,
    * nativeTime will be 00:00:00 in the timezone of that date, not 00:00:00 in
    * UTC.