diff --git a/Models/CalendarMapper.php b/Models/CalendarMapper.php
index 1cced5f..fa10104 100644
--- a/Models/CalendarMapper.php
+++ b/Models/CalendarMapper.php
@@ -65,7 +65,6 @@ class CalendarMapper extends DataMapperAbstract
     protected static $hasMany = [
         'events' => [
             'mapper'         => EventMapper::class,
-            'relationmapper' => EventMapper::class,
             'table'          => 'calendar_event',
             'dst'            => 'calendar_event_calendar',
             'src'            => null,
diff --git a/Models/EventMapper.php b/Models/EventMapper.php
index 109721d..00a512e 100644
--- a/Models/EventMapper.php
+++ b/Models/EventMapper.php
@@ -59,7 +59,7 @@ class EventMapper extends DataMapperAbstract
      * @var array<string, array>
      * @since 1.0.0
      */
-    protected static $hasOne = [
+    protected static $ownsOne = [
         'schedule' => [
             'mapper' => ScheduleMapper::class,
             'src'    => 'calendar_event_schedule',