--- lib/Sbuild/ResolverBase.pm.orig     2015-07-20 20:07:57.016986687 +0200
+++ lib/Sbuild/ResolverBase.pm  2015-07-23 10:07:28.301877333 +0200
@@ -247,7 +247,7 @@
     $self->set('Initial Foreign Arches', $self->get_foreign_architectures());

     if ($self->get('Host Arch') ne $self->get('Build Arch')) {
-       add_foreign_architecture($session, $self->get('Host Arch'))
+       $self->add_foreign_architecture($self->get('Host Arch'))
     }
 }