diff --git a/manifests/service_instance.pp b/manifests/service_instance.pp
index 1ac836ff..5ca1638c 100644
--- a/manifests/service_instance.pp
+++ b/manifests/service_instance.pp
@@ -75,9 +75,11 @@
 #   (optional) Attach share server directly to share network.
 #   Defaults to: false
 #
+# DEPRECATED PARAMETERS
+#
 # [*service_instance_network_helper_type*]
 # Allowed values are nova, neutron
-# Defaults to: neutron
+# Defaults to: undef
 
 define manila::service_instance (
   $create_service_image                   = true,
@@ -97,12 +99,17 @@ define manila::service_instance (
   $service_network_division_mask          = 28,
   $interface_driver                       = 'manila.network.linux.interface.OVSInterfaceDriver',
   $connect_share_server_to_tenant_network = false,
-  $service_instance_network_helper_type   = 'neutron',
+  # DEPRECATED PARAMETERS
+  $service_instance_network_helper_type   = undef,
 
 ) {
 
   include ::manila::deps
 
+  if $service_instance_network_helper_type {
+    warning('service_instance_network_helper_type is deprecated, has no effect, and will be removed in the future.')
+  }
+
   if $create_service_image {
     if $service_image_location {
       glance_image { $service_image_name:
@@ -134,6 +141,5 @@ define manila::service_instance (
     "${name}/service_network_division_mask":          value => $service_network_division_mask;
     "${name}/interface_driver":                       value => $interface_driver;
     "${name}/connect_share_server_to_tenant_network": value => $connect_share_server_to_tenant_network;
-    "${name}/service_instance_network_helper_type":   value => $service_instance_network_helper_type;
   }
 }
diff --git a/releasenotes/notes/deprecate_service_instance_network_helper_type_parameter-781ea3e658e9c535.yaml b/releasenotes/notes/deprecate_service_instance_network_helper_type_parameter-781ea3e658e9c535.yaml
new file mode 100644
index 00000000..8a905d80
--- /dev/null
+++ b/releasenotes/notes/deprecate_service_instance_network_helper_type_parameter-781ea3e658e9c535.yaml
@@ -0,0 +1,4 @@
+---
+deprecations:
+  - service_instance_network_helper_type is now deprecated for
+    removal; the parameter has no effect.
diff --git a/spec/defines/manila_service_instance_spec.rb b/spec/defines/manila_service_instance_spec.rb
index 6fcbd906..26505334 100644
--- a/spec/defines/manila_service_instance_spec.rb
+++ b/spec/defines/manila_service_instance_spec.rb
@@ -21,7 +21,6 @@ describe 'manila::service_instance' do
       :service_network_division_mask          => 28,
       :interface_driver                       => 'manila.network.linux.interface.OVSInterfaceDriver',
       :connect_share_server_to_tenant_network => false,
-      :service_instance_network_helper_type   => 'neutron',
     }
   end