diff --git a/src/lib/Hydra/Base/Controller/NixChannel.pm b/src/lib/Hydra/Base/Controller/NixChannel.pm
index 3d013539..0f100df6 100644
--- a/src/lib/Hydra/Base/Controller/NixChannel.pm
+++ b/src/lib/Hydra/Base/Controller/NixChannel.pm
@@ -89,7 +89,7 @@ sub nixexprs : Chained('nix') PathPart('nixexprs.tar.bz2') Args(0) {
 sub binary_cache_url : Chained('nix') PathPart('binary-cache-url') Args(0) {
     my ($self, $c) = @_;
     $c->stash->{'plain'} = { data => $c->uri_for('/') };
-    $c->header('Content-Type' => 'text/plain');
+    $c->response->content_type('text/plain');
     $c->forward('Hydra::View::Plain');
 }
 
diff --git a/src/lib/Hydra/Controller/Root.pm b/src/lib/Hydra/Controller/Root.pm
index c0bbc320..832f2b23 100644
--- a/src/lib/Hydra/Controller/Root.pm
+++ b/src/lib/Hydra/Controller/Root.pm
@@ -198,7 +198,7 @@ sub nar :Local :Args(1) {
 
 sub nix_cache_info :Path('nix-cache-info') :Args(0) {
     my ($self, $c) = @_;
-    $c->header('Content-Type' => 'text/plain');
+    $c->response->content_type('text/plain');
     $c->stash->{'plain'} = { data => 
         #"StoreDir: $Nix::Config::storeDir\n" . # FIXME
         "StoreDir: /nix/store\n" .