diff --git a/manifests/quota.pp b/manifests/quota.pp
index f30b9221..531e1ec6 100644
--- a/manifests/quota.pp
+++ b/manifests/quota.pp
@@ -6,15 +6,15 @@
 #
 # [*max_instances_per_tenant*]
 #   (optional) Default maximum number of instances per tenant.
-#   Defaults to 5.
+#   Defaults to $facts['os_service_default'].
 #
 # [*max_ram_per_tenant*]
 #   (optional) Default maximum amount of RAM (in MB) per tenant.
-#   Defaults to -1.
+#   Defaults to $facts['os_service_default'].
 #
 # [*max_accepted_volume_size*]
 #   (optional) Default maximum volume size (in GB) for an instance.
-#   Defaults to 5.
+#   Defaults to $facts['os_service_default'].
 #
 # [*max_volumes_per_tenant*]
 #   (optional) Default maximum volume capacity (in GB) spanning across
@@ -23,19 +23,19 @@
 #
 # [*max_backups_per_tenant*]
 #   (optional) Default maximum number of backups created by a tenant.
-#   Defaults to 50.
+#   Defaults to $facts['os_service_default'].
 #
 # [*quota_driver*]
 #   (optional) Default driver to use for quota checks.
 #   Defaults to 'trove.quota.quota.DbQuotaDriver'.
 #
 class trove::quota (
-  $max_instances_per_tenant = 5,
-  $max_ram_per_tenant       = -1,
-  $max_accepted_volume_size = 5,
-  $max_volumes_per_tenant   = 20,
-  $max_backups_per_tenant   = 50,
-  $quota_driver             = 'trove.quota.quota.DbQuotaDriver',
+  $max_instances_per_tenant = $facts['os_service_default'],
+  $max_ram_per_tenant       = $facts['os_service_default'],
+  $max_accepted_volume_size = $facts['os_service_default'],
+  $max_volumes_per_tenant   = $facts['os_service_default'],
+  $max_backups_per_tenant   = $facts['os_service_default'],
+  $quota_driver             = $facts['os_service_default'],
 ) {
 
   include trove::deps
diff --git a/releasenotes/notes/use-service-default-for-quota-opts-d06793e6832314d3.yaml b/releasenotes/notes/use-service-default-for-quota-opts-d06793e6832314d3.yaml
new file mode 100644
index 00000000..d56afafa
--- /dev/null
+++ b/releasenotes/notes/use-service-default-for-quota-opts-d06793e6832314d3.yaml
@@ -0,0 +1,5 @@
+---
+upgrade:
+  - |
+    Default values of the ``trove::quota`` class parameters have been updated
+    and now the service default values are used by default.
diff --git a/spec/classes/trove_quota_spec.rb b/spec/classes/trove_quota_spec.rb
index 1cf5329b..9c372698 100644
--- a/spec/classes/trove_quota_spec.rb
+++ b/spec/classes/trove_quota_spec.rb
@@ -5,18 +5,12 @@ describe 'trove::quota' do
   shared_examples_for 'trove::quota' do
     context 'with default parameters' do
       it 'contains default values' do
-        is_expected.to contain_trove_config('DEFAULT/max_instances_per_tenant').with(
-          :value => 5)
-        is_expected.to contain_trove_config('DEFAULT/max_ram_per_tenant').with(
-          :value => -1)
-        is_expected.to contain_trove_config('DEFAULT/max_accepted_volume_size').with(
-          :value => 5)
-        is_expected.to contain_trove_config('DEFAULT/max_volumes_per_tenant').with(
-          :value => 20)
-        is_expected.to contain_trove_config('DEFAULT/max_backups_per_tenant').with(
-          :value => 50)
-        is_expected.to contain_trove_config('DEFAULT/quota_driver').with(
-          :value => 'trove.quota.quota.DbQuotaDriver')
+        is_expected.to contain_trove_config('DEFAULT/max_instances_per_tenant').with_value('<SERVICE DEFAULT>')
+        is_expected.to contain_trove_config('DEFAULT/max_ram_per_tenant').with_value('<SERVICE DEFAULT>')
+        is_expected.to contain_trove_config('DEFAULT/max_accepted_volume_size').with_value('<SERVICE DEFAULT>')
+        is_expected.to contain_trove_config('DEFAULT/max_volumes_per_tenant').with_value('<SERVICE DEFAULT>')
+        is_expected.to contain_trove_config('DEFAULT/max_backups_per_tenant').with_value('<SERVICE DEFAULT>')
+        is_expected.to contain_trove_config('DEFAULT/quota_driver').with_value('<SERVICE DEFAULT>')
       end
     end
 
@@ -27,19 +21,16 @@ describe 'trove::quota' do
           :max_accepted_volume_size => 10,
           :max_volumes_per_tenant   => 100,
           :max_backups_per_tenant   => 100,
+          :quota_driver             => 'trove.quota.quota.DbQuotaDriver',
         }
       end
       it 'contains overrided values' do
-        is_expected.to contain_trove_config('DEFAULT/max_instances_per_tenant').with(
-          :value => 10)
-        is_expected.to contain_trove_config('DEFAULT/max_ram_per_tenant').with(
-          :value => 10)
-        is_expected.to contain_trove_config('DEFAULT/max_accepted_volume_size').with(
-          :value => 10)
-        is_expected.to contain_trove_config('DEFAULT/max_volumes_per_tenant').with(
-          :value => 100)
-        is_expected.to contain_trove_config('DEFAULT/max_backups_per_tenant').with(
-          :value => 100)
+        is_expected.to contain_trove_config('DEFAULT/max_instances_per_tenant').with_value(10)
+        is_expected.to contain_trove_config('DEFAULT/max_ram_per_tenant').with_value(10)
+        is_expected.to contain_trove_config('DEFAULT/max_accepted_volume_size').with_value(10)
+        is_expected.to contain_trove_config('DEFAULT/max_volumes_per_tenant').with_value(100)
+        is_expected.to contain_trove_config('DEFAULT/max_backups_per_tenant').with_value(100)
+        is_expected.to contain_trove_config('DEFAULT/quota_driver').with_value('trove.quota.quota.DbQuotaDriver')
       end
     end
   end