diff --git a/api/v1beta1/temporalcluster_types.go b/api/v1beta1/temporalcluster_types.go
index fc765871..e8cbf77a 100644
--- a/api/v1beta1/temporalcluster_types.go
+++ b/api/v1beta1/temporalcluster_types.go
@@ -961,7 +961,8 @@ type TemporalClusterSpec struct {
 	// Archival allows Workflow Execution Event Histories and Visibility data backups for the temporal cluster.
 	// +optional
 	Archival *ClusterArchivalSpec `json:"archival,omitempty"`
-
+// Replication allows configuration of multi-cluster replication.
+// +optional
 	Replication *ClusterReplicationSpec `json:"replication,omitempty"`
 }