diff --git a/library/Icingadb/Model/Host.php b/library/Icingadb/Model/Host.php
index f99a0cda..bd8451bb 100644
--- a/library/Icingadb/Model/Host.php
+++ b/library/Icingadb/Model/Host.php
@@ -253,6 +253,7 @@ class Host extends Model
     {
         $relations->hasOne('state', HostState::class)->setJoinType('LEFT');
         $relations->hasOne('dependency_node', DependencyNode::class)->setJoinType('LEFT');
+        $relations->hasOne('unreachable_parent', UnreachableParent::class)->setJoinType('LEFT');
 
         $relations->belongsTo('environment', Environment::class);
         $relations->belongsTo('eventcommand', Eventcommand::class);
diff --git a/library/Icingadb/Model/Service.php b/library/Icingadb/Model/Service.php
index 8f10f6d8..ecb3157b 100644
--- a/library/Icingadb/Model/Service.php
+++ b/library/Icingadb/Model/Service.php
@@ -245,6 +245,7 @@ class Service extends Model
     {
         $relations->hasOne('state', ServiceState::class)->setJoinType('LEFT');
         $relations->hasOne('dependency_node', DependencyNode::class)->setJoinType('LEFT');
+        $relations->hasOne('unreachable_parent', UnreachableParent::class)->setJoinType('LEFT');
 
         $relations->belongsTo('environment', Environment::class);
         $relations->belongsTo('host', Host::class)->setJoinType('LEFT');