diff --git a/sane/sane.def b/sane/sane.def
index fd91092..f4a57c3 100644
--- a/sane/sane.def
+++ b/sane/sane.def
@@ -20,3 +20,4 @@ EXPORTS
     sane_hgsane_strstatus
     sane_hgsane_init_ex
     sane_hgsane_io_control
+    sane_hgsane_err_desc
\ No newline at end of file