diff --git a/manifests/init.pp b/manifests/init.pp
index f99db31..5d56e7b 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -1,47 +1,47 @@
 # == Class: debnet
 #
 # Initial class of module.
 #
 # === Parameters
 #
 # none
 #
 # === Variables
 #
 # none
 #
 # === Examples
 #
 # include debnet
 #
 # === Authors
 #
 # Tibor Repasi
 #
 # === Copyright
 #
 # Copyright 2016 Tibor Repasi
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
 class debnet {
   include debnet::params
 
-  if $osfamily != 'Debian' {
+  if $::osfamily != 'Debian' {
     fail('This module supports Debian based Linux distributions only.')
   }
 
   package { $debnet::params::iproute_pkg:
     ensure => 'installed',
   }
 }