diff --git a/src/Hydra/lib/Hydra/Base/Controller/Nix.pm b/src/Hydra/lib/Hydra/Base/Controller/Nix.pm
index d930b361..5de9d5bf 100644
--- a/src/Hydra/lib/Hydra/Base/Controller/Nix.pm
+++ b/src/Hydra/lib/Hydra/Base/Controller/Nix.pm
@@ -49,6 +49,8 @@ sub pkg : Chained('nix') PathPart Args(1) {
 
     $c->stash->{build} = $pkg;
 
+    $c->stash->{manifestUri} = $c->uri_for($self->action_for("manifest"), $c->req->captures);
+
     $c->stash->{current_view} = 'Hydra::View::NixPkg';
 
     $c->response->content_type('application/nix-package');
diff --git a/src/Hydra/lib/Hydra/View/NixPkg.pm b/src/Hydra/lib/Hydra/View/NixPkg.pm
index 010c6df8..108ff12b 100644
--- a/src/Hydra/lib/Hydra/View/NixPkg.pm
+++ b/src/Hydra/lib/Hydra/View/NixPkg.pm
@@ -10,7 +10,7 @@ sub process {
 
     my $build = $c->stash->{build};
 
-    my $s = "NIXPKG1 " . $c->uri_for("manifest", $build->id)
+    my $s = "NIXPKG1 " . $c->stash->{manifestUri}
         . " " . $build->nixname . " " . $build->system
         . " " . $build->drvpath . " " . $build->outpath;