diff --git a/data/os/Archlinux.yaml b/data/os/Archlinux.yaml
index c675df1..074cf91 100644
--- a/data/os/Archlinux.yaml
+++ b/data/os/Archlinux.yaml
@@ -1,6 +1,6 @@
 ---
 timezone::package: tzdata
 timezone::zoneinfo_dir: /usr/share/zoneinfo
 timezone::localtime_file: /etc/localtime
 timezone::timezone_update: 'timedatectl set-timezone %s'
-timezone::timezone_update_check_cmd: "timedatectl status | grep 'Timezone:\|Time zone:' | grep -q %s"
+timezone::timezone_update_check_cmd: 'timedatectl status | grep "Timezone:\|Time zone:" | grep -q %s'
diff --git a/data/os/RedHat/7.yaml b/data/os/RedHat/7.yaml
index a9a0577..e4a45bf 100644
--- a/data/os/RedHat/7.yaml
+++ b/data/os/RedHat/7.yaml
@@ -1,6 +1,6 @@
 ---
 timezone::timezone_update: 'timedatectl set-timezone %s'
-timezone::timezone_update_check_cmd: "timedatectl status | grep 'Timezone:\|Time zone:' | grep -q %s"
+timezone::timezone_update_check_cmd: 'timedatectl status | grep "Timezone:\|Time zone:" | grep -q %s'
 timezone::check_hwclock_enabled_cmd: 'grep LOCAL /etc/adjtime'
 timezone::check_hwclock_disabled_cmd: 'grep UTC /etc/adjtime'
 timezone::hwclock_cmd: 'timedatectl set-local-rtc %s'
diff --git a/spec/support/redhat.rb b/spec/support/redhat.rb
index a7f4836..92caf70 100644
--- a/spec/support/redhat.rb
+++ b/spec/support/redhat.rb
@@ -1,74 +1,74 @@
 shared_examples 'RedHat' do
 
   describe 'when using default class parameters with osfamily => RedHat and major release => 6' do
     let(:params) { {} }
     let(:facts) do
       {
         :os => {
           :name => 'CentOS',
           :family => 'RedHat',
           :release => { :major => '6' }
         }
       }
     end
 
     it { is_expected.to create_class('timezone') }
 
     it do
       is_expected.to contain_package('tzdata').with(:ensure => 'present',
                                                     :before => 'File[/etc/localtime]')
     end
 
     it { is_expected.to contain_file('/etc/sysconfig/clock').with_ensure('file') }
     it { is_expected.to contain_file('/etc/sysconfig/clock').with_content(%r{^ZONE="Etc/UTC"$}) }
     it { is_expected.not_to contain_exec('update_timezone') }
 
     it do
       is_expected.to contain_file('/etc/localtime').with(:ensure => 'file',
                                                          :source => 'file:///usr/share/zoneinfo/Etc/UTC')
     end
 
     context 'when timezone => "Europe/Berlin"' do
       let(:params) { { :timezone => 'Europe/Berlin' } }
 
       it { is_expected.to contain_file('/etc/sysconfig/clock').with_content(%r{^ZONE="Europe/Berlin"$}) }
       it { is_expected.to contain_file('/etc/localtime').with_source('file:///usr/share/zoneinfo/Europe/Berlin') }
     end
 
     context 'when autoupgrade => true' do
       let(:params) { { :autoupgrade => true } }
 
       it { is_expected.to contain_package('tzdata').with_ensure('latest') }
     end
 
     context 'when ensure => absent' do
       let(:params) { { :ensure => 'absent' } }
 
       it { is_expected.to contain_package('tzdata').with_ensure('present') }
       it { is_expected.to contain_file('/etc/sysconfig/clock').with_ensure('absent') }
       it { is_expected.to contain_file('/etc/localtime').with_ensure('absent') }
     end
 
     include_examples 'validate parameters'
   end
 
   describe 'when using default class parameters with osfamily => RedHat and major release => 7' do
     let(:params) { {} }
     let(:facts) do
       {
         :os => {
           :name => 'CentOS',
           :family => 'RedHat',
           :release => { :major => '7' }
         }
       }
     end
 
     it { is_expected.to create_class('timezone') }
     it { is_expected.not_to contain_file('/etc/sysconfig/clock') }
     it { is_expected.to contain_file('/etc/localtime').with_ensure('file') }
-    it { is_expected.to contain_exec('update_timezone').with_command('timedatectl set-timezone Etc/UTC').with_unless("timedatectl status | grep 'Timezone:' | grep -q Etc/UTC") }
+    it { is_expected.to contain_exec('update_timezone').with_command('timedatectl set-timezone Etc/UTC').with_unless('timedatectl status | grep "Timezone:\|Time zone:" | grep -q Etc/UTC') }
 
     include_examples 'validate parameters'
   end
 end