diff --git a/manifests/init.pp b/manifests/init.pp
index e3431a1..e0f8353 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -151,10 +151,6 @@
 #   (Optional) Password for decrypting ssl_key_file (if encrypted)
 #   Defaults to $::os_service_default.
 #
-# [*amqp_allow_insecure_clients*]
-#   (Optional) Accept clients using either SSL or plain TCP
-#   Defaults to $::os_service_default.
-#
 # [*amqp_sasl_mechanisms*]
 #   (Optional) Space separated list of acceptable SASL mechanisms
 #   Defaults to $::os_service_default.
@@ -180,6 +176,12 @@
 #  in the magnum config.
 #  Defaults to false.
 #
+# DEPRECATED PARAMETERS
+#
+# [*amqp_allow_insecure_clients*]
+#   (Optional) Accept clients using either SSL or plain TCP
+#   Defaults to undef.
+#
 class magnum(
   $package_ensure                     = 'present',
   $notification_transport_url         = $::os_service_default,
@@ -211,13 +213,14 @@ class magnum(
   $amqp_ssl_cert_file                 = $::os_service_default,
   $amqp_ssl_key_file                  = $::os_service_default,
   $amqp_ssl_key_password              = $::os_service_default,
-  $amqp_allow_insecure_clients        = $::os_service_default,
   $amqp_sasl_mechanisms               = $::os_service_default,
   $amqp_sasl_config_dir               = $::os_service_default,
   $amqp_sasl_config_name              = $::os_service_default,
   $amqp_username                      = $::os_service_default,
   $amqp_password                      = $::os_service_default,
   $purge_config                       = false,
+  # DEPRECATED PARAMETERS
+  $amqp_allow_insecure_clients        = undef,
 ) {
 
   include magnum::deps
@@ -225,6 +228,11 @@ class magnum(
   include magnum::policy
   include magnum::db
 
+  if $amqp_allow_insecure_clients != undef {
+    warning('The amqp_allow_insecure_clients parameter is deprecated and \
+will be removed in a future release.')
+  }
+
   package { 'magnum-common':
     ensure => $package_ensure,
     name   => $::magnum::params::common_package,
@@ -252,22 +260,21 @@ class magnum(
   }
 
   oslo::messaging::amqp { 'magnum_config':
-    server_request_prefix  => $amqp_server_request_prefix,
-    broadcast_prefix       => $amqp_broadcast_prefix,
-    group_request_prefix   => $amqp_group_request_prefix,
-    container_name         => $amqp_container_name,
-    idle_timeout           => $amqp_idle_timeout,
-    trace                  => $amqp_trace,
-    ssl_ca_file            => $amqp_ssl_ca_file,
-    ssl_cert_file          => $amqp_ssl_cert_file,
-    ssl_key_file           => $amqp_ssl_key_file,
-    ssl_key_password       => $amqp_ssl_key_password,
-    allow_insecure_clients => $amqp_allow_insecure_clients,
-    sasl_mechanisms        => $amqp_sasl_mechanisms,
-    sasl_config_dir        => $amqp_sasl_config_dir,
-    sasl_config_name       => $amqp_sasl_config_name,
-    username               => $amqp_username,
-    password               => $amqp_password,
+    server_request_prefix => $amqp_server_request_prefix,
+    broadcast_prefix      => $amqp_broadcast_prefix,
+    group_request_prefix  => $amqp_group_request_prefix,
+    container_name        => $amqp_container_name,
+    idle_timeout          => $amqp_idle_timeout,
+    trace                 => $amqp_trace,
+    ssl_ca_file           => $amqp_ssl_ca_file,
+    ssl_cert_file         => $amqp_ssl_cert_file,
+    ssl_key_file          => $amqp_ssl_key_file,
+    ssl_key_password      => $amqp_ssl_key_password,
+    sasl_mechanisms       => $amqp_sasl_mechanisms,
+    sasl_config_dir       => $amqp_sasl_config_dir,
+    sasl_config_name      => $amqp_sasl_config_name,
+    username              => $amqp_username,
+    password              => $amqp_password,
   }
 
   oslo::messaging::default { 'magnum_config':
diff --git a/releasenotes/notes/deprecate_allow_insecure_clients-option-974063e837f1b85f.yaml b/releasenotes/notes/deprecate_allow_insecure_clients-option-974063e837f1b85f.yaml
new file mode 100644
index 0000000..72dff75
--- /dev/null
+++ b/releasenotes/notes/deprecate_allow_insecure_clients-option-974063e837f1b85f.yaml
@@ -0,0 +1,4 @@
+---
+deprecations:
+  - allow_insecure_clients option is now deprecated for removal, the
+    parameter has no effect.
diff --git a/spec/classes/magnum_init_spec.rb b/spec/classes/magnum_init_spec.rb
index 245b9ab..f8837e2 100644
--- a/spec/classes/magnum_init_spec.rb
+++ b/spec/classes/magnum_init_spec.rb
@@ -182,7 +182,6 @@ describe 'magnum' do
           :ssl_cert_file          => '<SERVICE DEFAULT>',
           :ssl_key_file           => '<SERVICE DEFAULT>',
           :ssl_key_password       => '<SERVICE DEFAULT>',
-          :allow_insecure_clients => '<SERVICE DEFAULT>',
           :sasl_mechanisms        => '<SERVICE DEFAULT>',
           :sasl_config_dir        => '<SERVICE DEFAULT>',
           :sasl_config_name       => '<SERVICE DEFAULT>',
@@ -216,7 +215,6 @@ describe 'magnum' do
           :ssl_cert_file          => '/etc/certfile',
           :ssl_key_file           => '/etc/key',
           :ssl_key_password       => '<SERVICE DEFAULT>',
-          :allow_insecure_clients => '<SERVICE DEFAULT>',
           :sasl_mechanisms        => '<SERVICE DEFAULT>',
           :sasl_config_dir        => '<SERVICE DEFAULT>',
           :sasl_config_name       => '<SERVICE DEFAULT>',