diff -urNp orig-amanda-3.3.9/perl/Amanda/Config/FoldingHash.pm new-amanda-3.3.9/perl/Amanda/Config/FoldingHash.pm
--- orig-amanda-3.3.9/perl/Amanda/Config/FoldingHash.pm	2016-02-09 23:52:47.000000000 +0100
+++ new-amanda-3.3.9/perl/Amanda/Config/FoldingHash.pm	2016-08-04 08:56:16.560998574 +0200
@@ -1,6 +1,7 @@
 package Amanda::Config::FoldingHash;
 use Tie::Hash;
-use base 'Tie::StdHash';
+eval {require 'Tie::StdHash';};
+our @ISA = 'Tie::StdHash';
 use Amanda::Config;
 use Amanda::Debug;