diff --git a/calendar/inc/class.calendar_merge.inc.php b/calendar/inc/class.calendar_merge.inc.php
index d3576479a8..f01a141d7d 100644
--- a/calendar/inc/class.calendar_merge.inc.php
+++ b/calendar/inc/class.calendar_merge.inc.php
@@ -39,6 +39,7 @@ class calendar_merge extends bo_merge
 		'today',
 		'tomorrow',
 		'yesterday',
+		'selected',
 	);
 
 	/**
@@ -337,6 +338,10 @@ class calendar_merge extends bo_merge
 			$date = $this->bo->date2ts($date);
 			if(is_array($id) && $id['start'] && ($date < $id['start'] || $date > $id['end'])) return array();
 		}
+		elseif ($plugin == 'selected')
+		{
+			$date = $id['start'];
+		}
 		else
 		{
 			$date = strtotime($plugin);