diff --git a/nginx/manifests/init.pp b/nginx/manifests/init.pp
index c85fcc0..3829279 100644
--- a/nginx/manifests/init.pp
+++ b/nginx/manifests/init.pp
@@ -1,6 +1,15 @@
 # Install and configure nginx.
 #
+# === Parameters
+#
+# $chroot:
+#   Use chroot on OpenBSD. Defaults to true.
+#
+# $workers:
+#   Number of worker processes. Defaults to $processorcount.
+#
 class nginx(
+  $chroot=true,
   $workers=$::processorcount,
 ) {
 
@@ -9,6 +18,12 @@ class nginx(
       $user = 'www'
       $group = 'www'
       $logdir = '/var/www/logs'
+
+      if ! $chroot {
+        Service['nginx'] {
+          flags => '-u',
+        }
+      }
     }
     'ubuntu': {
       $user = 'www-data'
@@ -59,10 +74,6 @@ class nginx(
   service { 'nginx':
     ensure => running,
     enable => true,
-    start  => $::operatingsystem ? {
-      'openbsd' => '/usr/sbin/nginx -u',
-      default   => undef,
-    },
   }
 
 }