diff --git a/pkg/apis/tenant/v1alpha2/workspacetemplate_types.go b/pkg/apis/tenant/v1alpha2/workspacetemplate_types.go
index 85de918c19834bcc673c69d7e305f22280c55a72..18a5a980612e1a7b898c4daa23687e3891c5678a 100644
--- a/pkg/apis/tenant/v1alpha2/workspacetemplate_types.go
+++ b/pkg/apis/tenant/v1alpha2/workspacetemplate_types.go
@@ -69,8 +69,8 @@ type Template struct {
 }
 
 type Placement struct {
-	Clusters        []Cluster       `json:"clusters,omitempty"`
-	ClusterSelector ClusterSelector `json:"clusterSelector,omitempty"`
+	Clusters        []Cluster        `json:"clusters,omitempty"`
+	ClusterSelector *ClusterSelector `json:"clusterSelector,omitempty"`
 }
 
 type ClusterSelector struct {
diff --git a/pkg/apis/tenant/v1alpha2/zz_generated.deepcopy.go b/pkg/apis/tenant/v1alpha2/zz_generated.deepcopy.go
index 77214bce5fee1c31e29c29a0594a6e8c478dd5b8..6cc1c4c1389ffe7f411d7c0103a8e3b80d860bfb 100644
--- a/pkg/apis/tenant/v1alpha2/zz_generated.deepcopy.go
+++ b/pkg/apis/tenant/v1alpha2/zz_generated.deepcopy.go
@@ -125,7 +125,11 @@ func (in *Placement) DeepCopyInto(out *Placement) {
 		*out = make([]Cluster, len(*in))
 		copy(*out, *in)
 	}
-	in.ClusterSelector.DeepCopyInto(&out.ClusterSelector)
+	if in.ClusterSelector != nil {
+		in, out := &in.ClusterSelector, &out.ClusterSelector
+		*out = new(ClusterSelector)
+		(*in).DeepCopyInto(*out)
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Placement.