diff --git a/puppet/services/manila-backend-unity.yaml b/puppet/services/manila-backend-unity.yaml
index 5fb27e77fc..3b9edaa602 100644
--- a/puppet/services/manila-backend-unity.yaml
+++ b/puppet/services/manila-backend-unity.yaml
@@ -76,7 +76,7 @@ outputs:
         manila::backend::dellemc_unity::driver_handles_share_servers: {get_param: ManilaUnityDriverHandlesShareServers}
         manila::backend::dellemc_unity::emc_nas_password: {get_param: ManilaUnityNasPassword}
         manila::backend::dellemc_unity::emc_nas_server: {get_param: ManilaUnityNasServer}
-        manila::backend::dellemc_unity::emc_share_backend: {'unity'}
+        manila::backend::dellemc_unity::emc_share_backend: unity
         manila::backend::dellemc_unity::unity_server_meta_pool: {get_param: ManilaUnityServerMetaPool}
         manila::backend::dellemc_unity::unity_share_data_pools: {get_param: ManilaUnityShareDataPools}
         manila::backend::dellemc_unity::unity_ethernet_ports: {get_param: ManilaUnityEthernetPorts}
diff --git a/puppet/services/manila-backend-vmax.yaml b/puppet/services/manila-backend-vmax.yaml
index 72e6c0d0f9..5cb6281506 100644
--- a/puppet/services/manila-backend-vmax.yaml
+++ b/puppet/services/manila-backend-vmax.yaml
@@ -66,7 +66,7 @@ outputs:
         manila::backend::dellemc_vmax::driver_handles_share_servers: {get_param: ManilaVMAXDriverHandlesShareServers}
         manila::backend::dellemc_vmax::emc_nas_password: {get_param: ManilaVMAXNasPassword}
         manila::backend::dellemc_vmax::emc_nas_server: {get_param: ManilaVMAXNasServer}
-        manila::backend::dellemc_vmax::emc_share_backend: {'vmax'}
+        manila::backend::dellemc_vmax::emc_share_backend: vmax
         manila::backend::dellemc_vmax::vmax_server_container: {get_param: ManilaVMAXServerContainer}
         manila::backend::dellemc_vmax::vmax_share_data_pools: {get_param: ManilaVMAXShareDataPools}
         manila::backend::dellemc_vmax::vmax_ethernet_ports: {get_param: ManilaVMAXEthernetPorts}
diff --git a/puppet/services/manila-backend-vnx.yaml b/puppet/services/manila-backend-vnx.yaml
index 10ae6359d8..ddebabd943 100644
--- a/puppet/services/manila-backend-vnx.yaml
+++ b/puppet/services/manila-backend-vnx.yaml
@@ -76,7 +76,7 @@ outputs:
         manila::backend::dellemc_vnx::driver_handles_share_servers: {get_param: ManilaVNXDriverHandlesShareServers}
         manila::backend::dellemc_vnx::emc_nas_password: {get_param: ManilaVNXNasPassword}
         manila::backend::dellemc_vnx::emc_nas_server: {get_param: ManilaVNXNasServer}
-        manila::backend::dellemc_vnx::emc_share_backend: {'vnx'}
+        manila::backend::dellemc_vnx::emc_share_backend: vnx
         manila::backend::dellemc_vnx::vnx_server_container: {get_param: ManilaVNXServerContainer}
         manila::backend::dellemc_vnx::vnx_share_data_pools: {get_param: ManilaVNXShareDataPools}
         manila::backend::dellemc_vnx::vnx_ethernet_ports: {get_param: ManilaVNXEthernetPorts}