diff --git a/internal/provider/virtualmachine/resource_virtualmachine_constructor.go b/internal/provider/virtualmachine/resource_virtualmachine_constructor.go
index cdb3f515..b188b022 100644
--- a/internal/provider/virtualmachine/resource_virtualmachine_constructor.go
+++ b/internal/provider/virtualmachine/resource_virtualmachine_constructor.go
@@ -294,7 +294,6 @@ func (c *Constructor) Setup() util.Processors {
 				vmBuilder.Input(inputName, inputType, inputBus)
 				return nil
 			},
-			Required: true,
 		},
 	}
 	return append(processors, customProcessors...)
@@ -336,6 +335,7 @@ func Updater(c *client.Client, ctx context.Context, vm *kubevirtv1.VirtualMachin
 	vm.Spec.Template.Spec.Networks = []kubevirtv1.Network{}
 	vm.Spec.Template.Spec.Domain.Devices.Interfaces = []kubevirtv1.Interface{}
 	vm.Spec.Template.Spec.Domain.Devices.Disks = []kubevirtv1.Disk{}
+	vm.Spec.Template.Spec.Domain.Devices.Inputs = []kubevirtv1.Input{}
 	vm.Spec.Template.Spec.Volumes = []kubevirtv1.Volume{}
 	vm.Annotations[harvesterutil.AnnotationVolumeClaimTemplates] = "[]"
 	return newVMConstructor(c, ctx, &builder.VMBuilder{