diff --git a/proof/hw-pci-devinst.ads b/proof/hw-pci-devinst.ads
new file mode 100644
index 0000000..0b84fb9
--- /dev/null
+++ b/proof/hw-pci-devinst.ads
@@ -0,0 +1,17 @@
+--
+-- Copyright (C) 2017 Nico Huber <nico.h@gmx.de>
+--
+-- This program is free software; you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation; either version 2 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+
+with HW.PCI.Dev;
+
+package HW.PCI.Devinst is new HW.PCI.Dev;