diff --git a/lib/models/calendar/CalendarDate.class.php b/lib/models/calendar/CalendarDate.class.php
index bb15ed823f83a8be910cb029ff0260894358ca45..68ca2dfcc07061572b6883ec292a69a3fb3b646f 100644
--- a/lib/models/calendar/CalendarDate.class.php
+++ b/lib/models/calendar/CalendarDate.class.php
@@ -90,10 +90,6 @@ class CalendarDate extends SimpleORMap implements PrivacyObject
 
     public function delete()
     {
-        // do not delete until one calendar is left
-        if (count($this->calendars) > 1) {
-            return false;
-        }
         $calendars = $this->calendars;
         $ret = parent::delete();
         // only one calendar is left