diff --git a/packstack/puppet/modules/packstack/manifests/heat/rabbitmq.pp b/packstack/puppet/modules/packstack/manifests/heat/rabbitmq.pp
index c9b954f6c..ca755bd90 100644
--- a/packstack/puppet/modules/packstack/manifests/heat/rabbitmq.pp
+++ b/packstack/puppet/modules/packstack/manifests/heat/rabbitmq.pp
@@ -36,7 +36,6 @@ class packstack::heat::rabbitmq ()
 
     class { '::heat':
       keystone_ec2_uri    => hiera('CONFIG_KEYSTONE_PUBLIC_URL'),
-      rpc_backend         => 'rabbit',
       rabbit_use_ssl      => hiera('CONFIG_AMQP_SSL_ENABLED'),
       default_transport_url => "rabbit://${rabbit_userid}:${rabbit_password}@${rabbit_host}:${rabbit_port}/",
       debug               => hiera('CONFIG_DEBUG_MODE'),
diff --git a/packstack/puppet/modules/packstack/manifests/ironic/rabbitmq.pp b/packstack/puppet/modules/packstack/manifests/ironic/rabbitmq.pp
index c3e1d9423..6b56913cf 100644
--- a/packstack/puppet/modules/packstack/manifests/ironic/rabbitmq.pp
+++ b/packstack/puppet/modules/packstack/manifests/ironic/rabbitmq.pp
@@ -23,7 +23,6 @@ class packstack::ironic::rabbitmq ()
     }
 
     class { '::ironic':
-      rpc_backend           => 'rabbit',
       rabbit_use_ssl        => hiera('CONFIG_AMQP_SSL_ENABLED'),
       default_transport_url => "rabbit://${rabbit_userid}:${rabbit_password}@${rabbit_host}:${rabbit_port}/",
       database_connection   => "mysql+pymysql://ironic:${ironic_rabbitmq_cfg_ironic_db_pw}@${ironic_rabbitmq_cfg_mariadb_host}/ironic",
diff --git a/packstack/puppet/modules/packstack/manifests/sahara/rabbitmq.pp b/packstack/puppet/modules/packstack/manifests/sahara/rabbitmq.pp
index 8f6e7562f..5ca9102ec 100644
--- a/packstack/puppet/modules/packstack/manifests/sahara/rabbitmq.pp
+++ b/packstack/puppet/modules/packstack/manifests/sahara/rabbitmq.pp
@@ -34,7 +34,6 @@ class packstack::sahara::rabbitmq ()
       identity_uri          => hiera('CONFIG_KEYSTONE_ADMIN_URL'),
       use_neutron           => ($sahara_cfg_config_neutron_install == 'y'),
       host                  => hiera('CONFIG_SAHARA_HOST'),
-      rpc_backend           => 'rabbit',
       rabbit_use_ssl        => hiera('CONFIG_AMQP_SSL_ENABLED'),
       default_transport_url => "rabbit://${rabbit_userid}:${rabbit_password}@${rabbit_host}:${rabbit_port}/",
       kombu_ssl_ca_certs    => $kombu_ssl_ca_certs,
diff --git a/packstack/puppet/modules/packstack/manifests/trove/rabbitmq.pp b/packstack/puppet/modules/packstack/manifests/trove/rabbitmq.pp
index 2a02de8cb..5b812a790 100644
--- a/packstack/puppet/modules/packstack/manifests/trove/rabbitmq.pp
+++ b/packstack/puppet/modules/packstack/manifests/trove/rabbitmq.pp
@@ -25,7 +25,6 @@ class packstack::trove::rabbitmq ()
 
 
     class { '::trove':
-      rpc_backend                  => 'rabbit',
       rabbit_use_ssl               => hiera('CONFIG_AMQP_SSL_ENABLED'),
       default_transport_url        => "rabbit://${rabbit_userid}:${rabbit_password}@${rabbit_host}:${rabbit_port}/",
       database_connection          => "mysql+pymysql://trove:${trove_rabmq_cfg_trove_db_pw}@${trove_rabmq_cfg_mariadb_host}/trove",