diff --git a/manifests/init.pp b/manifests/init.pp
index 0d1b004..d3df39a 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -160,8 +160,8 @@
 
   file { $config_file:
     ensure  => $file_ensure,
-    owner   => root,
-    group   => 0,
+    owner   => 'root',
+    group   => 'root',
     mode    => '0644',
     content => template('smartd/smartd.conf'),
     require => Package[$package_name],
diff --git a/spec/classes/smartd_spec.rb b/spec/classes/smartd_spec.rb
index 9dcb1c9..025bc0c 100644
--- a/spec/classes/smartd_spec.rb
+++ b/spec/classes/smartd_spec.rb
@@ -31,7 +31,7 @@
       it { should contain_file('/etc/smartd.conf').with(
         :ensure  => 'present',
         :owner   => 'root',
-        :group   => '0',
+        :group   => 'root',
         :mode    => '0644',
         :notify  => 'Service[smartd]'
       )}
@@ -57,7 +57,7 @@
       it { should contain_file('/etc/smartd.conf').with(
         :ensure  => 'present',
         :owner   => 'root',
-        :group   => '0',
+        :group   => 'root',
         :mode    => '0644',
         :require => 'Package[smartmontools]',
         :notify  => 'Service[smartd]'
@@ -90,7 +90,7 @@
       it { should contain_file('/usr/local/etc/smartd.conf').with(
         :ensure  => 'present',
         :owner   => 'root',
-        :group   => '0',
+        :group   => 'root',
         :mode    => '0644',
         :require => 'Package[smartmontools]',
         :notify  => 'Service[smartd]'