diff --git a/components/cluster/cluster-type.conf b/components/cluster/cluster-type.conf
index 19682bbda..0c35ddded 100644
--- a/components/cluster/cluster-type.conf
+++ b/components/cluster/cluster-type.conf
@@ -33,7 +33,10 @@ type ClusterListener {
 }
 
 type Endpoint {
+	%require "host",
 	%attribute string "host",
+
+	%require "port",
 	%attribute string "port",
 
 	%attribute array "config_files" {