diff --git a/library/Icingadb/Model/UnreachableParent.php b/library/Icingadb/Model/UnreachableParent.php
index f04863d9a..de3608a3c 100644
--- a/library/Icingadb/Model/UnreachableParent.php
+++ b/library/Icingadb/Model/UnreachableParent.php
@@ -16,6 +16,22 @@
 use ipl\Sql\Select;
 use ipl\Stdlib\Filter;
 
+/**
+ * Class UnreachableParent
+ *
+ * @property string $id
+ * @property int $level
+ * @property ?string $host_id
+ * @property ?string $service_id
+ * @property ?string $redundancy_group_id
+ * @property ?string $dependency_id
+ * @property int $is_group_member
+ *
+ * @property (?Host)|Query $host
+ * @property (?Service)|Query $service
+ * @property (?RedundancyGroup)|Query $redundancy_group
+ * @property (?Dependency)|Query $dependency
+ */
 class UnreachableParent extends Model
 {
     public function getTableName(): string