--- Imaging-1.1.6/Sane/_sane.c.orig	2006-12-03 13:12:22.000000000 +0100
+++ Imaging-1.1.6/Sane/_sane.c	2009-02-28 11:41:19.000000000 +0200
@@ -1152,8 +1152,8 @@
 static PyObject *
 PySane_get_devices(PyObject *self, PyObject *args)
 {
-  SANE_Device **devlist;
-  SANE_Device *dev;
+  const SANE_Device **devlist;
+  const SANE_Device *dev;
   SANE_Status st;
   PyObject *list;
   int local_only, i;