diff --git a/feeds/ical.php b/feeds/ical.php
index 92a8c6a7..513bd21d 100644
--- a/feeds/ical.php
+++ b/feeds/ical.php
@@ -161,7 +161,8 @@ function( $m ) {
 	"DTSTAMP:19700101T000000\r\n" .
 	'DTSTART:' . mysql2date( $date_format, $event->post_date ) . "\r\n" .
 	'DTEND:' . $end->format( $date_format ) . "\r\n" .
-	'LAST-MODIFIED:' . mysql2date( $date_format, $event->post_modified_gmt ) . "\r\n";
+	'LAST-MODIFIED:' . mysql2date( $date_format, $event->post_modified_gmt ) . "\r\n".
+	'URL:' . esc_url(get_permalink($event->ID)) . "\r\n";
 
 	if ( $description ) {
 		$output .= 'DESCRIPTION:' . $description . "\r\n";