diff --git a/manifests/conf.pp b/manifests/conf.pp
index 146e6ff..6feb113 100644
--- a/manifests/conf.pp
+++ b/manifests/conf.pp
@@ -1,118 +1,124 @@
 # Define: sudo::conf
 #
 # This module manages sudo configurations
 #
 # Parameters:
 #   [*ensure*]
 #     Ensure if present or absent.
 #     Default: present
 #
 #   [*priority*]
 #     Prefix file name with $priority
 #     Default: 10
 #
 #   [*content*]
 #     Content of configuration snippet.
 #     Default: undef
 #
 #   [*source*]
 #     Source of configuration snippet.
 #     Default: undef
 #
 #   [*sudo_config_dir*]
 #     Where to place configuration snippets.
 #     Only set this, if your platform is not supported or
 #     you know, what you're doing.
 #     Default: auto-set, platform specific
 #
 # Actions:
 #   Installs sudo configuration snippets
 #
 # Requires:
 #   Class sudo
 #
 # Sample Usage:
 #   sudo::conf { 'admins':
 #     source => 'puppet:///files/etc/sudoers.d/admins',
 #   }
 #
 # [Remember: No empty lines between comments and class definition]
 define sudo::conf(
   $ensure          = present,
   $priority        = 10,
   $content         = undef,
   $source          = undef,
   $sudo_config_dir = undef,
   $sudo_file_name  = undef
   ) {
 
   include sudo
 
   # Hack to allow the user to set the config_dir from the
   # sudo::config parameter, but default to $sudo::params::config_dir
   # if it is not provided. $sudo::params isn't included before
   # the parameters are loaded in.
   $sudo_config_dir_real = $sudo_config_dir ? {
     undef            => $sudo::params::config_dir,
     $sudo_config_dir => $sudo_config_dir
   }
 
   # sudo skip file name that contain a "."
   $dname = regsubst($name, '\.', '-', 'G')
 
+  if size("x${priority}") == 2 {
+    $priority_real = "0${priority}"
+  } else {
+    $priority_real = $priority
+  }
+
   # build current file name with path
   if $sudo_file_name != undef {
     $cur_file = "${sudo_config_dir_real}${sudo_file_name}"
   } else {
-    $cur_file = "${sudo_config_dir_real}${priority}_${dname}"
+    $cur_file = "${sudo_config_dir_real}${priority_real}_${dname}"
   }
 
   Class['sudo'] -> Sudo::Conf[$name]
 
   if $::osfamily == 'RedHat' {
     if (versioncmp($::sudoversion, '1.7.2p1') < 0) {
       warning("Found sudo with version ${::sudoversion}, but at least version 1.7.2p1 is required!")
     }
   }
 
   if $content != undef {
     if is_array($content) {
       $lines = join($content, "\n")
       $content_real = "${lines}\n"
     } else {
       $content_real = "${content}\n"
     }
   } else {
     $content_real = undef
   }
 
   if $ensure == 'present' {
     $notify_real = Exec["sudo-syntax-check for file ${cur_file}"]
   } else {
     $notify_real = undef
   }
 
-  file { "${priority}_${dname}":
+  file { "${priority_real}_${dname}":
     ensure  => $ensure,
     path    => $cur_file,
     owner   => 'root',
     group   => $sudo::params::config_file_group,
     mode    => '0440',
     source  => $source,
     content => $content_real,
     notify  => $notify_real,
   }
 
   exec {"sudo-syntax-check for file ${cur_file}":
     command     => "visudo -c -f ${cur_file} || ( rm -f '${cur_file}' && exit 1)",
     refreshonly => true,
     path        => [
       '/bin',
       '/sbin',
       '/usr/bin',
       '/usr/sbin',
       '/usr/local/bin',
       '/usr/local/sbin'
     ],
   }
 }
diff --git a/spec/defines/sudo_spec.rb b/spec/defines/sudo_spec.rb
index bf4b8d5..1840039 100644
--- a/spec/defines/sudo_spec.rb
+++ b/spec/defines/sudo_spec.rb
@@ -1,76 +1,141 @@
 require 'spec_helper'
 describe 'sudo::conf', :type => :define do
   let(:title)    { 'admins' }
   let(:filename) { '10_admins' }
   let(:file_path) { '/etc/sudoers.d/10_admins' }
 
   let :facts do
     {
       :lsbdistcodename => 'wheezy',
       :operatingsystemmajrelease => '7',
       :operatingsystem => 'Debian',
       :osfamily        => 'Debian',
       :puppetversion   => '3.7.0',
     }
   end
 
   let :params do
       {
       :priority        => 10,
       :content         => "%admins ALL=(ALL) NOPASSWD: ALL",
       :sudo_config_dir => '/etc/sudoers.d/',
       }
   end
 
   describe "when creating a sudo entry" do
 
     it { should contain_sudo__conf('admins').with({
         :priority => params[:priority],
         :content  => params[:content],
       })
     }
 
     it { should contain_file(filename).with({
         'ensure'  => 'present',
         'content' => "%admins ALL=(ALL) NOPASSWD: ALL\n",
         'owner'   => 'root',
         'group'   => 'root',
         'path'    => file_path,
         'mode'    => '0440',
       })
     }
 
     it { should contain_exec("sudo-syntax-check for file #{params[:sudo_config_dir]}#{params[:priority]}_#{title}").with({
         'command'     => "visudo -c -f #{params[:sudo_config_dir]}#{params[:priority]}_#{title} || ( rm -f '#{params[:sudo_config_dir]}#{params[:priority]}_#{title}' && exit 1)",
         'refreshonly' => 'true',
       })
     }
 
     it { should contain_file(filename).that_notifies("Exec[sudo-syntax-check for file #{params[:sudo_config_dir]}#{params[:priority]}_#{title}]") }
 
     it { should_not contain_exec("sudo-syntax-check for file #{params[:sudo_config_dir]}#{params[:priority]}_#{title}").that_requires("File[#{filename}]") }
     it { should_not contain_file(filename).that_requires("Exec[sudo-syntax-check for file #{params[:sudo_config_dir]}#{params[:priority]}_#{title}]") }
 
   end
 
+  describe "when creating a sudo entry with single number priority" do
+    let(:filename) { '05_admins' }
+    let(:file_path) { '/etc/sudoers.d/05_admins' }
+
+    let :params do
+        {
+        :priority        => 5,
+        :content         => "%admins ALL=(ALL) NOPASSWD: ALL",
+        :sudo_config_dir => '/etc/sudoers.d/',
+        }
+    end
+
+    it { should contain_sudo__conf('admins').with({
+        :priority => params[:priority],
+        :content  => params[:content],
+      })
+    }
+
+    it { should contain_file(filename).with({
+        'ensure'  => 'present',
+        'content' => "%admins ALL=(ALL) NOPASSWD: ALL\n",
+        'owner'   => 'root',
+        'group'   => 'root',
+        'path'    => file_path,
+        'mode'    => '0440',
+      })
+    }
+
+    it { should contain_exec("sudo-syntax-check for file #{params[:sudo_config_dir]}0#{params[:priority]}_#{title}").with({
+        'command'     => "visudo -c -f #{params[:sudo_config_dir]}0#{params[:priority]}_#{title} || ( rm -f '#{params[:sudo_config_dir]}0#{params[:priority]}_#{title}' && exit 1)",
+        'refreshonly' => 'true',
+      })
+    }
+
+    it { should contain_file(filename).that_notifies("Exec[sudo-syntax-check for file #{params[:sudo_config_dir]}0#{params[:priority]}_#{title}]") }
+
+    it { should_not contain_exec("sudo-syntax-check for file #{params[:sudo_config_dir]}0#{params[:priority]}_#{title}").that_requires("File[#{filename}]") }
+    it { should_not contain_file(filename).that_requires("Exec[sudo-syntax-check for file #{params[:sudo_config_dir]}0#{params[:priority]}_#{title}]") }
+
+  end
+
   describe "when removing an sudo entry" do
     let :params do
       {
       :ensure          => 'absent',
       :priority        => 10,
       :content         => "%admins ALL=(ALL) NOPASSWD: ALL",
       :sudo_config_dir => '/etc/sudoers.d/',
       }
     end
 
     it { should contain_file(filename).with({
         'ensure'  => 'absent',
         'content' => "%admins ALL=(ALL) NOPASSWD: ALL\n",
         'owner'   => 'root',
         'group'   => 'root',
         'path'    => file_path,
         'mode'    => '0440',
       })
     }
   end
+
+  describe "when removing an sudo entry with single number priority" do
+    let :params do
+      {
+      :ensure          => 'absent',
+      :priority        => 5,
+      :content         => "%admins ALL=(ALL) NOPASSWD: ALL",
+      :sudo_config_dir => '/etc/sudoers.d/',
+      }
+    end
+
+    let(:filename) { '05_admins' }
+    let(:file_path) { '/etc/sudoers.d/05_admins' }
+
+    it { should contain_file(filename).with({
+        'ensure'  => 'absent',
+        'content' => "%admins ALL=(ALL) NOPASSWD: ALL\n",
+        'owner'   => 'root',
+        'group'   => 'root',
+        'path'    => file_path,
+        'mode'    => '0440',
+      })
+    }
+  end
 end