diff --git a/plugins/unifying/lu-device-runtime.c b/plugins/unifying/lu-device-runtime.c
index 59c2892d0..6f19ab0ee 100644
--- a/plugins/unifying/lu-device-runtime.c
+++ b/plugins/unifying/lu-device-runtime.c
@@ -158,6 +158,9 @@ lu_device_runtime_open (LuDevice *device, GError **error)
 		return FALSE;
 	}
 
+	/* this only exists with the original HID++1.0 version */
+	lu_device_set_hidpp_version (device, 1);
+
 	/* we can flash this */
 	lu_device_add_flag (device, LU_DEVICE_FLAG_CAN_FLASH);