diff --git a/manifests/proxy/dlo.pp b/manifests/proxy/dlo.pp
index b6c7e965..e12558d6 100644
--- a/manifests/proxy/dlo.pp
+++ b/manifests/proxy/dlo.pp
@@ -8,17 +8,18 @@
 # == Parameters
 #
 # [*rate_limit_after_segment*]
-# Start rate-limiting DLO segment serving after the Nth segment of a segmented object.
-# Default to 10.
+#  (Optional) Start rate-limiting DLO segment serving after the Nth segment of
+#  a segmented object.
+#  Defaults to $::os_service_default.
 #
 # [*rate_limit_segments_per_sec*]
-# Once segment rate-limiting kicks in for an object, limit segments served to N per second.
-# 0 means no rate-limiting.
-# Default to 1.
+#  (Optional) Once segment rate-limiting kicks in for an object, limit segments
+#  served to N per second. 0 means no rate-limiting.
+#  Defaults to $::os_service_default.
 #
 # [*max_get_time*]
-# Time limit on GET requests (seconds).
-# Default to 86400.
+#  (Optional) Time limit on GET requests (seconds).
+#  Defaults to $::os_service_default.
 #
 # == Authors
 #
@@ -29,9 +30,9 @@
 # Copyright 2015 Mirantis Inc, unless otherwise noted.
 #
 class swift::proxy::dlo (
-  $rate_limit_after_segment    = '10',
-  $rate_limit_segments_per_sec = '1',
-  $max_get_time                = '86400'
+  $rate_limit_after_segment    = $::os_service_default,
+  $rate_limit_segments_per_sec = $::os_service_default,
+  $max_get_time                = $::os_service_default,
 ) {
 
   include swift::deps
diff --git a/spec/classes/swift_proxy_dlo_spec.rb b/spec/classes/swift_proxy_dlo_spec.rb
index 274d9332..5d548037 100644
--- a/spec/classes/swift_proxy_dlo_spec.rb
+++ b/spec/classes/swift_proxy_dlo_spec.rb
@@ -4,23 +4,23 @@ describe 'swift::proxy::dlo' do
   shared_examples 'swift::proxy::dlo' do
     describe "when using default parameters" do
       it { is_expected.to contain_swift_proxy_config('filter:dlo/use').with_value('egg:swift#dlo') }
-      it { is_expected.to contain_swift_proxy_config('filter:dlo/rate_limit_after_segment').with_value('10') }
-      it { is_expected.to contain_swift_proxy_config('filter:dlo/rate_limit_segments_per_sec').with_value('1') }
-      it { is_expected.to contain_swift_proxy_config('filter:dlo/max_get_time').with_value('86400') }
+      it { is_expected.to contain_swift_proxy_config('filter:dlo/rate_limit_after_segment').with_value('<SERVICE DEFAULT>') }
+      it { is_expected.to contain_swift_proxy_config('filter:dlo/rate_limit_segments_per_sec').with_value('<SERVICE DEFAULT>') }
+      it { is_expected.to contain_swift_proxy_config('filter:dlo/max_get_time').with_value('<SERVICE DEFAULT>') }
     end
 
     describe "when overriding default parameters" do
       let :params do
         {
-          :rate_limit_after_segment    => '30',
-          :rate_limit_segments_per_sec => '5',
-          :max_get_time                => '6400',
+          :rate_limit_after_segment    => '10',
+          :rate_limit_segments_per_sec => '1',
+          :max_get_time                => '86400',
         }
       end
 
-      it { is_expected.to contain_swift_proxy_config('filter:dlo/rate_limit_after_segment').with_value('30') }
-      it { is_expected.to contain_swift_proxy_config('filter:dlo/rate_limit_segments_per_sec').with_value('5') }
-      it { is_expected.to contain_swift_proxy_config('filter:dlo/max_get_time').with_value('6400') }
+      it { is_expected.to contain_swift_proxy_config('filter:dlo/rate_limit_after_segment').with_value('10') }
+      it { is_expected.to contain_swift_proxy_config('filter:dlo/rate_limit_segments_per_sec').with_value('1') }
+      it { is_expected.to contain_swift_proxy_config('filter:dlo/max_get_time').with_value('86400') }
     end
   end