diff --git a/apis/management.cattle.io/v3/machine_types.go b/apis/management.cattle.io/v3/machine_types.go
index dbc1f9e1..907823a7 100644
--- a/apis/management.cattle.io/v3/machine_types.go
+++ b/apis/management.cattle.io/v3/machine_types.go
@@ -121,7 +121,7 @@ type MachineSpec struct {
 	Imported             bool          `json:"imported"`
 	Description          string        `json:"description,omitempty"`
 	DisplayName          string        `json:"displayName"`
-	RequestedHostname    string        `json:"requestedHostname,omitempty" norman:"type=dnsLabel,nullable,noupdate"`
+	RequestedHostname    string        `json:"requestedHostname,omitempty" norman:"type=dnsLabel,nullable,noupdate,required"`
 	ClusterName          string        `json:"clusterName,omitempty" norman:"type=reference[cluster],noupdate,required"`
 	Role                 []string      `json:"role,omitempty" norman:"noupdate,type=array[enum],options=etcd|worker|controlplane"`
 	MachineTemplateName  string        `json:"machineTemplateName,omitempty" norman:"type=reference[machineTemplate],noupdate"`