diff --git a/manifests/init.pp b/manifests/init.pp
index 1f646009c7..adfa3aa334 100755
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -396,7 +396,7 @@
   Optional[String] $log_level                               = $docker::params::log_level,
   Optional[String] $log_driver                              = $docker::params::log_driver,
   Array $log_opt                                            = $docker::params::log_opt,
-  Optional[String] $selinux_enabled                         = $docker::params::selinux_enabled,
+  Optional[Boolean] $selinux_enabled                        = $docker::params::selinux_enabled,
   Optional[Boolean] $use_upstream_package_source            = $docker::params::use_upstream_package_source,
   Optional[Boolean] $pin_upstream_package_source            = $docker::params::pin_upstream_package_source,
   Optional[Integer] $apt_source_pin_level                   = $docker::params::apt_source_pin_level,
@@ -426,10 +426,10 @@
   Optional[String] $dm_datadev                              = $docker::params::dm_datadev,
   Optional[String] $dm_metadatadev                          = $docker::params::dm_metadatadev,
   Optional[String] $dm_thinpooldev                          = $docker::params::dm_thinpooldev,
-  Optional[String] $dm_use_deferred_removal                 = $docker::params::dm_use_deferred_removal,
-  Optional[String] $dm_use_deferred_deletion                = $docker::params::dm_use_deferred_deletion,
-  Optional[String] $dm_blkdiscard                           = $docker::params::dm_blkdiscard,
-  Optional[String] $dm_override_udev_sync_check             = $docker::params::dm_override_udev_sync_check,
+  Optional[Boolean] $dm_use_deferred_removal                = $docker::params::dm_use_deferred_removal,
+  Optional[Boolean] $dm_use_deferred_deletion               = $docker::params::dm_use_deferred_deletion,
+  Optional[Boolean] $dm_blkdiscard                          = $docker::params::dm_blkdiscard,
+  Optional[Boolean] $dm_override_udev_sync_check            = $docker::params::dm_override_udev_sync_check,
   Boolean $overlay2_override_kernel_check                   = $docker::params::overlay2_override_kernel_check,
   Optional[String] $execdriver                              = $docker::params::execdriver,
   Boolean $manage_package                                   = $docker::params::manage_package,
@@ -446,7 +446,7 @@
   Optional[String] $storage_data_size                       = $docker::params::storage_data_size,
   Optional[String] $storage_min_data_size                   = $docker::params::storage_min_data_size,
   Optional[String] $storage_chunk_size                      = $docker::params::storage_chunk_size,
-  Optional[String] $storage_growpart                        = $docker::params::storage_growpart,
+  Optional[Boolean] $storage_growpart                      = $docker::params::storage_growpart,
   Optional[String] $storage_auto_extend_pool                = $docker::params::storage_auto_extend_pool,
   Optional[String] $storage_pool_autoextend_threshold       = $docker::params::storage_pool_autoextend_threshold,
   Optional[String] $storage_pool_autoextend_percent         = $docker::params::storage_pool_autoextend_percent,
@@ -485,12 +485,6 @@
     }
   }
 
-  if $selinux_enabled {
-    assert_type(Pattern[/^(true|false)$/], $selinux_enabled) |$a, $b| {
-      fail translate(('selinux_enabled must be true or false'))
-    }
-  }
-
   if $storage_driver {
     assert_type(Pattern[/^(aufs|devicemapper|btrfs|overlay|overlay2|vfs|zfs)$/], $storage_driver) |$a, $b| {
       fail translate(('Valid values for storage_driver are aufs, devicemapper, btrfs, overlay, overlay2, vfs, zfs.'))
diff --git a/spec/classes/docker_spec.rb b/spec/classes/docker_spec.rb
index 8f4d668d18..75c4303418 100755
--- a/spec/classes/docker_spec.rb
+++ b/spec/classes/docker_spec.rb
@@ -490,7 +490,7 @@
       context 'with use deferred removal param' do
         let(:params) {
           { 'storage_driver' => 'devicemapper',
-            'dm_use_deferred_removal' => 'true'
+            'dm_use_deferred_removal' => true
           }
         }
         it { should contain_file(storage_config_file).with_content(/--storage-opt dm\.use_deferred_removal=true/) }
@@ -499,7 +499,7 @@
       context 'with use deferred deletion param' do
         let(:params) {
           { 'storage_driver' => 'devicemapper',
-            'dm_use_deferred_deletion' => 'true'
+            'dm_use_deferred_deletion' => true
           }
         }
         it { should contain_file(storage_config_file).with_content(/--storage-opt dm\.use_deferred_deletion=true/) }
@@ -508,7 +508,7 @@
       context 'with block discard param' do
         let(:params) {
           { 'storage_driver' => 'devicemapper',
-            'dm_blkdiscard' => 'true'
+            'dm_blkdiscard' => true
           }
         }
         it { should contain_file(storage_config_file).with_content(/--storage-opt dm\.blkdiscard=true/) }
@@ -517,7 +517,7 @@
       context 'with override udev sync check param' do
         let(:params) {
           { 'storage_driver' => 'devicemapper',
-            'dm_override_udev_sync_check' => 'true'
+            'dm_override_udev_sync_check' => true
           }
         }
         it { should contain_file(storage_config_file).with_content(/--storage-opt dm\.override_udev_sync_check=true/) }
@@ -675,7 +675,7 @@
       end
 
       context 'with specific selinux_enabled parameter' do
-        let(:params) { { 'selinux_enabled' => 'true' } }
+        let(:params) { { 'selinux_enabled' => true } }
         it { should contain_file(service_config_file).with_content(/--selinux-enabled=true/) }
       end
 
@@ -684,7 +684,7 @@
         it do
           expect {
             should contain_package('docker')
-          }.to raise_error(Puppet::Error, /selinux_enabled must be true or false/)
+          }.to raise_error(Puppet::Error, /got String/)
         end
       end
 
@@ -766,7 +766,7 @@
       end
 
       context 'with storage grow partition' do
-        let(:params) { { 'storage_growpart' => 'true' }}
+        let(:params) { { 'storage_growpart' => true }}
         it { should contain_file(storage_setup_file).with_content(/^GROWPART=true/) }
       end