diff --git a/lib/Slic3r/Model.pm b/lib/Slic3r/Model.pm
index 04b5b6f52..10668b6b9 100644
--- a/lib/Slic3r/Model.pm
+++ b/lib/Slic3r/Model.pm
@@ -393,8 +393,12 @@ sub raw_mesh {
 sub raw_bounding_box {
     my $self = shift;
     
-    my @meshes = map $_->mesh, grep !$_->modifier, @{ $self->volumes };
+    my @meshes = map $_->mesh->clone, grep !$_->modifier, @{ $self->volumes };
     die "No meshes found" if !@meshes;
+    
+    my $instance = $self->instances->[0];
+    $instance->transform_mesh($_, 1) for @meshes;
+    
     my $bb = (shift @meshes)->bounding_box;
     $bb->merge($_->bounding_box) for @meshes;
     return $bb;
diff --git a/lib/Slic3r/Print.pm b/lib/Slic3r/Print.pm
index b4ca45363..abd25fce1 100644
--- a/lib/Slic3r/Print.pm
+++ b/lib/Slic3r/Print.pm
@@ -171,7 +171,7 @@ sub add_model_object {
     } else {
         $o = $self->add_object($object, $object->raw_bounding_box);
     }
-
+    
     $o->set_copies([ map Slic3r::Point->new_scale(@{ $_->offset }), @{ $object->instances } ]);
     $o->set_layer_height_ranges($object->layer_height_ranges);