diff --git a/plugins/superio/fu-plugin-superio.c b/plugins/superio/fu-plugin-superio.c
index e63112140..29ad7d766 100644
--- a/plugins/superio/fu-plugin-superio.c
+++ b/plugins/superio/fu-plugin-superio.c
@@ -45,12 +45,14 @@ fu_plugin_superio_coldplug_chipset (FuPlugin *plugin, const gchar *chipset, GErr
 	/* create IT89xx or IT89xx */
 	if (id >> 8 == 0x85) {
 		dev = g_object_new (FU_TYPE_SUPERIO_IT85_DEVICE,
+				    "device-file", "/dev/port",
 				    "chipset", chipset,
 				    "id", id,
 				    "port", port,
 				    NULL);
 	} else if (id >> 8 == 0x89) {
 		dev = g_object_new (FU_TYPE_SUPERIO_IT89_DEVICE,
+				    "device-file", "/dev/port",
 				    "chipset", chipset,
 				    "id", id,
 				    "port", port,
diff --git a/plugins/superio/fu-superio-device.c b/plugins/superio/fu-superio-device.c
index bd212faae..5928a8061 100644
--- a/plugins/superio/fu-superio-device.c
+++ b/plugins/superio/fu-superio-device.c
@@ -20,7 +20,7 @@ typedef struct
 	guint16			 id;
 } FuSuperioDevicePrivate;
 
-G_DEFINE_TYPE_WITH_PRIVATE (FuSuperioDevice, fu_superio_device, FU_TYPE_DEVICE)
+G_DEFINE_TYPE_WITH_PRIVATE (FuSuperioDevice, fu_superio_device, FU_TYPE_UDEV_DEVICE)
 
 #define GET_PRIVATE(o) (fu_superio_device_get_instance_private (o))
 
diff --git a/plugins/superio/fu-superio-device.h b/plugins/superio/fu-superio-device.h
index be7ea1d46..9e5a229eb 100644
--- a/plugins/superio/fu-superio-device.h
+++ b/plugins/superio/fu-superio-device.h
@@ -9,11 +9,11 @@
 #include "fu-plugin.h"
 
 #define FU_TYPE_SUPERIO_DEVICE (fu_superio_device_get_type ())
-G_DECLARE_DERIVABLE_TYPE (FuSuperioDevice, fu_superio_device, FU, SUPERIO_DEVICE, FuDevice)
+G_DECLARE_DERIVABLE_TYPE (FuSuperioDevice, fu_superio_device, FU, SUPERIO_DEVICE, FuUdevDevice)
 
 struct _FuSuperioDeviceClass
 {
-	FuDeviceClass		parent_class;
+	FuUdevDeviceClass	parent_class;
 	gboolean		 (*setup)	(FuSuperioDevice	*self,
 						 GError		**error);
 };