diff --git a/inc/tz/get.php b/inc/tz/get.php
index 21146849..a89c22fc 100644
--- a/inc/tz/get.php
+++ b/inc/tz/get.php
@@ -45,6 +45,8 @@ if ( $qry->QDo('SELECT * FROM tz_localnames WHERE our_tzno = :our_tzno', array('
 
 header( 'ETag: "'.$tz->etag.'"' );
 header( 'Last-Modified', $tz->last_modified );
+header( 'Content-Disposition', $tzid . '.ics' );
+
 
 $request->DoResponse(200, $vtz->Render(), 'text/calendar');