diff --git a/time/manifests/init.pp b/time/manifests/init.pp
index 1aeed73..040291d 100644
--- a/time/manifests/init.pp
+++ b/time/manifests/init.pp
@@ -16,29 +16,33 @@ class time::server {
 # for example $timezone_set = "Europe/Helsinki".
 class time::zone {
     file { "/etc/localtime":
-        ensure => present,
-        mode   => "0644",
-        source => "/usr/share/zoneinfo/$timezone_set"
+        ensure => link,
+        target => "/usr/share/zoneinfo/${timezone_set}",
+        owner  => "root",
+        group  => $::operatingsystem ? {
+            "openbsd" => "wheel",
+            default   => "root",
+        },
     }
 
     case $operatingsystem {
-        centos,redhat: {
+        "centos","redhat": {
             file { "/etc/sysconfig/clock":
                 ensure  => present,
                 mode    => "0644",
                 content => template("time/sysconfig_clock.erb"),
             }
         }
-        ubuntu: {
+        "ubuntu": {
             file { "/etc/timezone":
                 ensure  => present,
                 mode    => "0644",
-                content => "$timezone_set\n",
+                content => "${timezone_set}\n",
             }
         }
-        openbsd: { } # file /etc/localtime is enough
-        default: {
-            fail("time::zone not supported on ${operatingsystem}")
+        "openbsd": { } # file /etc/localtime is enough
+        "default": {
+            fail("time::zone not supported on ${::operatingsystem}")
         }
     }
 }