duplicate_feed-1627-24.patch

diff --git atrium_calendar/atrium_calendar.feeds_importer_default.inc atrium_calendar/atrium_calendar.feeds_importer_default.inc
index 0ecc787..856048a 100644
--- atrium_calendar/atrium_calendar.feeds_importer_default.inc
+++ atrium_calendar/atrium_calendar.feeds_importer_default.inc
@@ -54,6 +54,11 @@ function atrium_calendar_feeds_importer_default() {
             'target' => 'created',
             'unique' => FALSE,
           ),
+          5 => array(
+            'source' => 'guid',
+            'target' => 'guid',
+            'unique' => TRUE,
+          ),
         ),
       ),
     ),