diff --git a/manifests/backend/dellemc_unity.pp b/manifests/backend/dellemc_unity.pp
index 0510692c..c82b615e 100644
--- a/manifests/backend/dellemc_unity.pp
+++ b/manifests/backend/dellemc_unity.pp
@@ -105,7 +105,7 @@ define manila::backend::dellemc_unity (
   $unity_share_server             = $::os_service_default,
   $report_default_filter_function = $::os_service_default,
   $network_plugin_ipv6_enabled    = true,
-  $emc_ssl_cert_verify            = false,
+  $emc_ssl_cert_verify            = undef,
   $emc_ssl_cert_path              = $::os_service_default,
   $package_ensure                 = 'present',
 ) {
@@ -115,6 +115,11 @@ define manila::backend::dellemc_unity (
 
   validate_legacy(String, 'validate_string', $emc_nas_password)
 
+  if $emc_ssl_cert_verify == undef {
+    warning('Default of emc_ssl_cert_verify will be changed from false to service default(true).')
+  }
+  $emc_ssl_cert_verify_real = pick($emc_ssl_cert_verify, false)
+
   $unity_share_driver = 'manila.share.drivers.dell_emc.driver.EMCShareDriver'
 
   manila_config {
@@ -132,7 +137,7 @@ define manila::backend::dellemc_unity (
     "${share_backend_name}/unity_share_server":             value => $unity_share_server;
     "${share_backend_name}/report_default_filter_function": value => $report_default_filter_function;
     "${share_backend_name}/network_plugin_ipv6_enabled":    value => $network_plugin_ipv6_enabled;
-    "${share_backend_name}/emc_ssl_cert_verify":            value => $emc_ssl_cert_verify;
+    "${share_backend_name}/emc_ssl_cert_verify":            value => $emc_ssl_cert_verify_real;
     "${share_backend_name}/emc_ssl_cert_path":              value => $emc_ssl_cert_path;
   }
 
diff --git a/manifests/backend/dellemc_vnx.pp b/manifests/backend/dellemc_vnx.pp
index ff031548..ccf55a35 100644
--- a/manifests/backend/dellemc_vnx.pp
+++ b/manifests/backend/dellemc_vnx.pp
@@ -94,7 +94,7 @@ define manila::backend::dellemc_vnx (
   $vnx_share_data_pools         = $::os_service_default,
   $vnx_ethernet_ports           = $::os_service_default,
   $network_plugin_ipv6_enabled  = true,
-  $emc_ssl_cert_verify          = false,
+  $emc_ssl_cert_verify          = undef,
   $emc_ssl_cert_path            = $::os_service_default,
   $package_ensure               = 'present',
   $driver_handles_share_servers = undef,
@@ -105,6 +105,11 @@ define manila::backend::dellemc_vnx (
 
   validate_legacy(String, 'validate_string', $emc_nas_password)
 
+  if $emc_ssl_cert_verify == undef {
+    warning('Default of emc_ssl_cert_verify will be changed from false to service default(true).')
+  }
+  $emc_ssl_cert_verify_real = pick($emc_ssl_cert_verify, false)
+
   if $driver_handles_share_servers != undef {
     warning('The driver_handles_share_servers parameter has been deprecated and has no effect')
   }
@@ -124,7 +129,7 @@ define manila::backend::dellemc_vnx (
     "${share_backend_name}/vnx_share_data_pools":         value => join(any2array($vnx_share_data_pools), ',');
     "${share_backend_name}/vnx_ethernet_ports":           value => join(any2array($vnx_ethernet_ports), ',');
     "${share_backend_name}/network_plugin_ipv6_enabled":  value => $network_plugin_ipv6_enabled;
-    "${share_backend_name}/emc_ssl_cert_verify":          value => $emc_ssl_cert_verify;
+    "${share_backend_name}/emc_ssl_cert_verify":          value => $emc_ssl_cert_verify_real;
     "${share_backend_name}/emc_ssl_cert_path":            value => $emc_ssl_cert_path;
   }
 
diff --git a/releasenotes/notes/change-emc_ssl_cert_verify-2a6204b63853bdf1.yaml b/releasenotes/notes/change-emc_ssl_cert_verify-2a6204b63853bdf1.yaml
new file mode 100644
index 00000000..08574bc5
--- /dev/null
+++ b/releasenotes/notes/change-emc_ssl_cert_verify-2a6204b63853bdf1.yaml
@@ -0,0 +1,9 @@
+---
+upgrade:
+  - |
+    Defaut value of the ``emc_ssl_cert_verify`` parameter in the following
+    resource types will be changed from ``false`` to service default which
+    is effectively ``true``. Make sure the parameter is set if needed.
+
+    - ``manila::backend::dellemc_unity``
+    - ``manila::backend::dellemc_vnx``