diff --git a/lib/icingadb/icingadb-objects.cpp b/lib/icingadb/icingadb-objects.cpp
index fa0b85b51..d3e493236 100644
--- a/lib/icingadb/icingadb-objects.cpp
+++ b/lib/icingadb/icingadb-objects.cpp
@@ -2170,6 +2170,7 @@ Dictionary::Ptr IcingaDB::SerializeState(const Checkable::Ptr& checkable)
 		attrs->Set("state", state);
 		attrs->Set("hard_state", service->HasBeenChecked() ? service->GetLastHardState() : 99);
 		attrs->Set("severity", service->GetSeverity());
+		attrs->Set("host_id", GetObjectIdentifier(host));
 	} else {
 		attrs->Set("host_id", id);
 		auto state = host->HasBeenChecked() ? host->GetState() : 99;