diff --git a/lib/icingadb/icingadb-objects.cpp b/lib/icingadb/icingadb-objects.cpp
index f1f6b5f09..a4987e2e9 100644
--- a/lib/icingadb/icingadb-objects.cpp
+++ b/lib/icingadb/icingadb-objects.cpp
@@ -1159,7 +1159,7 @@ bool IcingaDB::PrepareObject(const ConfigObject::Ptr& object, Dictionary::Ptr& a
 
 		Zone::Ptr parent = zone->GetParent();
 		if (parent) {
-			attributes->Set("parent_id", GetObjectIdentifier(zone));
+			attributes->Set("parent_id", GetObjectIdentifier(parent));
 		}
 
 		auto parentsRaw (zone->GetAllParentsRaw());