diff --git a/plugins/dfu/fu-dfu-device.c b/plugins/dfu/fu-dfu-device.c
index 9fdb73287..50a8a6dd4 100644
--- a/plugins/dfu/fu-dfu-device.c
+++ b/plugins/dfu/fu-dfu-device.c
@@ -1689,6 +1689,7 @@ fu_dfu_device_init(FuDfuDevice *self)
 	fu_device_add_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_UPDATABLE);
 	fu_device_add_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_ADD_COUNTERPART_GUIDS);
 	fu_device_add_internal_flag(FU_DEVICE(self), FU_DEVICE_INTERNAL_FLAG_REPLUG_MATCH_GUID);
+	fu_device_add_internal_flag(FU_DEVICE(self), FU_DEVICE_INTERNAL_FLAG_MD_SET_SIGNED);
 	fu_device_set_remove_delay(FU_DEVICE(self), FU_DEVICE_REMOVE_DELAY_RE_ENUMERATE);
 
 	fu_device_register_private_flag(FU_DEVICE(self),