diff --git a/plugins/libcalendaring/libvcalendar.php b/plugins/libcalendaring/libvcalendar.php
index ac04e876..6981a271 100644
--- a/plugins/libcalendaring/libvcalendar.php
+++ b/plugins/libcalendaring/libvcalendar.php
@@ -483,7 +483,7 @@ class libvcalendar implements Iterator
             case 'RELATED-TO':
                 $reltype = $prop->offsetGet('RELTYPE');
                 if ($reltype == 'PARENT' || $reltype === null) {
-                    $event['parent_id'] = $prop->value;
+                    $event['parent_id'] = $value;
                 }
                 break;
 
diff --git a/plugins/libcalendaring/tests/libvcalendar.php b/plugins/libcalendaring/tests/libvcalendar.php
index f97513a5..d401a960 100644
--- a/plugins/libcalendaring/tests/libvcalendar.php
+++ b/plugins/libcalendaring/tests/libvcalendar.php
@@ -469,8 +469,6 @@ class libvcalendar_test extends PHPUnit_Framework_TestCase
 
         $this->assertContains('RECURRENCE-ID;TZID=Europe/Zurich:20130814', $ics, "Recurrence-ID (1) being the exception date");
         $this->assertContains('RECURRENCE-ID;TZID=Europe/Zurich:20131113', $ics, "Recurrence-ID (2) being the exception date");
-        $this->assertContains('RECURRENCE-ID:20130814', $ics, "Recurrence-ID (1) being the exception date");
-        $this->assertContains('RECURRENCE-ID:20131113', $ics, "Recurrence-ID (2) being the exception date");
         $this->assertContains('SUMMARY:'.$exception2['title'], $ics, "Exception title");
     }