diff --git a/spec/classes/os_spec.rb b/spec/classes/os_spec.rb
index 99fa0f9..ee0e472 100644
--- a/spec/classes/os_spec.rb
+++ b/spec/classes/os_spec.rb
@@ -1,82 +1,82 @@
 require 'spec_helper'
 
 describe 'unattended_upgrades' do
   on_supported_os.each do |os, os_facts|
     context "on #{os}" do
       let(:facts) { os_facts }
       let(:file_unattended) { '/etc/apt/apt.conf.d/50unattended-upgrades' }
 
       it { is_expected.to compile.with_all_deps }
 
       it do
         is_expected.to create_file('/etc/apt/apt.conf.d/10periodic').
           with_owner('root').
           with_group('root').
           with_content(%r{APT::Periodic::Enable "1";}).
           with_content(%r{APT::Periodic::BackupArchiveInterval "0";}).
           with_content(%r{APT::Periodic::BackupLevel "3";}).
           with_content(%r{APT::Periodic::MaxAge "0";}).
           with_content(%r{APT::Periodic::MinAge "2";}).
           with_content(%r{APT::Periodic::MaxSize "0";}).
           with_content(%r{APT::Periodic::Update-Package-Lists "1";}).
           with_content(%r{APT::Periodic::Download-Upgradeable-Packages "0";}).
           with_content(%r{APT::Periodic::Download-Upgradeable-Packages-Debdelta "1";}).
           with_content(%r{APT::Periodic::Unattended-Upgrade "1";}).
           with_content(%r{APT::Periodic::AutocleanInterval "0";}).
           with_content(%r{APT::Periodic::Verbose "0";})
       end
 
       it { is_expected.to contain_apt__conf('auto-upgrades').with_ensure('absent') }
 
       it do
         is_expected.to create_file('/etc/apt/apt.conf.d/10options').
           with_owner('root').
           with_group('root').
           with_content(%r{^Dpkg::Options\s\{}).
           without_content(%r{^\s+\"--force-confdef\";}).
           without_content(%r{^\s+\"--force-confold\";}).
           without_content(%r{\"--force-confnew\";}).
           without_content(%r{\"--force-confmiss\";})
       end
 
       it { is_expected.to create_file(file_unattended).with_owner('root').with_group('root') }
 
       # rubocop:disable Style/RegexpLiteral
       case os_facts[:operatingsystem]
       when 'Debian'
         case os_facts[:lsbdistcodename]
-        when 'buster'
+        when 'bullseye'
           it do
             is_expected.to create_file(file_unattended).with_content(
               /Unattended-Upgrade::Origins-Pattern\ {\n
               \t"origin=Debian,codename=\${distro_codename},label=Debian";\n
-              \t"origin=Debian,codename=\${distro_codename},label=Debian-Security";\n
+              \t"origin=Debian,codename=\${distro_codename}-security,label=Debian-Security";\n
               };/x
             )
           end
-        when 'bullseye'
+        else
           it do
             is_expected.to create_file(file_unattended).with_content(
               /Unattended-Upgrade::Origins-Pattern\ {\n
               \t"origin=Debian,codename=\${distro_codename},label=Debian";\n
-              \t"origin=Debian,codename=\${distro_codename}-security,label=Debian-Security";\n
+              \t"origin=Debian,codename=\${distro_codename},label=Debian-Security";\n
               };/x
             )
           end
         end
       when 'Ubuntu'
         it do
           is_expected.to create_file(file_unattended).with_content(
             /Unattended-Upgrade::Origins-Pattern\ {\n
             \t"origin=\${distro_id},suite=\${distro_codename}";\n
             \t"origin=\${distro_id},suite=\${distro_codename}-security";\n
             \t"origin=\${distro_id}ESMApps,suite=\${distro_codename}-apps-security";\n
             \t"origin=\${distro_id}ESM,suite=\${distro_codename}-infra-security";\n
             };/x
           )
         end
       end
       # rubocop:enable Style/RegexpLiteral
     end
   end
 end