diff --git a/.sync.yml b/.sync.yml
index af3697c3..5fa35046 100644
--- a/.sync.yml
+++ b/.sync.yml
@@ -1,6 +1,7 @@
 ---
 spec/spec_helper.rb:
   mock_with: ':mocha'
+  facterdb_string_keys: true
 .puppet-lint.rc:
   disabled_lint_checks:
     - anchor_resource
diff --git a/spec/classes/selinux_config_mode_spec.rb b/spec/classes/selinux_config_mode_spec.rb
index 2503821d..b2195ab7 100644
--- a/spec/classes/selinux_config_mode_spec.rb
+++ b/spec/classes/selinux_config_mode_spec.rb
@@ -7,7 +7,7 @@
     context "on #{os}" do
       context 'when in enforcing mode' do
         let(:facts) do
-          override_facts(os_facts, os: { selinux: {
+          override_facts(os_facts, 'os' => { 'selinux' => {
                            'enabled' => true,
                            'enforced' => true,
                            'config_mode' => 'enforcing',
@@ -68,7 +68,7 @@
         let(:facts) do
           # Get a deep copy and then fully override the selinux facts
           result = override_facts(os_facts)
-          result[:os]['selinux'] = { 'enabled' => false }
+          result['os']['selinux'] = { 'enabled' => false }
           result
         end
 
@@ -76,7 +76,7 @@
           context "and requesting #{target_mode} mode" do
             let(:params) { { mode: target_mode } }
 
-            if os_facts[:osfamily] == 'Debian'
+            if os_facts['os']['family'] == 'Debian'
               it { is_expected.to contain_exec('activate-selinux') }
             else
               it { is_expected.not_to contain_exec('activate-selinux') }
diff --git a/spec/defines/selinux_boolean_spec.rb b/spec/defines/selinux_boolean_spec.rb
index 8e1966ea..f59413f3 100644
--- a/spec/defines/selinux_boolean_spec.rb
+++ b/spec/defines/selinux_boolean_spec.rb
@@ -16,7 +16,7 @@
 
       context 'SELinux enabled' do
         let(:facts) do
-          override_facts(super(), os: { selinux: { enabled: true } })
+          override_facts(super(), 'os' => { 'selinux' => { 'enabled' => true } })
         end
 
         ['on', true, 'present'].each do |value|
@@ -56,7 +56,7 @@
 
       context 'SELinux disabled' do
         let(:facts) do
-          override_facts(super(), os: { selinux: { enabled: false } })
+          override_facts(super(), 'os' => { 'selinux' => { 'enabled' => false } })
         end
 
         ['on', true, 'present'].each do |value|
diff --git a/spec/defines/selinux_module_spec.rb b/spec/defines/selinux_module_spec.rb
index bd4596bd..d60725a1 100644
--- a/spec/defines/selinux_module_spec.rb
+++ b/spec/defines/selinux_module_spec.rb
@@ -19,7 +19,7 @@
 
       context 'SELinux enabled' do
         let(:facts) do
-          override_facts(super(), os: { selinux: { enabled: true } })
+          override_facts(super(), 'os' => { 'selinux' => { 'enabled' => true } })
         end
 
         context 'ordering' do
@@ -201,7 +201,7 @@
 
       context 'SELinux disabled' do
         let(:facts) do
-          override_facts(super(), os: { selinux: { enabled: false } })
+          override_facts(super(), 'os' => { 'selinux' => { 'enabled' => false } })
         end
 
         context 'make sure it compiles' do
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 3226b22d..b9b36691 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -10,7 +10,7 @@
 require 'voxpupuli/test/spec_helper'
 
 RSpec.configure do |c|
-  c.facterdb_string_keys = false
+  c.facterdb_string_keys = true
   c.mock_with :mocha
 end