diff --git a/manifests/config.pp b/manifests/config.pp
index 47aecba8..28a3b23b 100644
--- a/manifests/config.pp
+++ b/manifests/config.pp
@@ -31,7 +31,7 @@ class tempest::config (
   $tempest_config        = {},
 ) {
 
-  validate_hash($tempest_config)
+  validate_legacy(Hash, 'validate_hash', $tempest_config)
 
   create_resources('tempest_config', $tempest_config)
 }
diff --git a/manifests/init.pp b/manifests/init.pp
index d5dedc83..f9386b03 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -372,7 +372,7 @@ class tempest(
 ) {
 
   if !is_service_default($tempest_roles) and !empty($tempest_roles){
-    validate_array($tempest_roles)
+    validate_legacy(Array, 'validate_array', $tempest_roles)
     $tempest_roles_real = join($tempest_roles, ',')
   } else {
     $tempest_roles_real = $::os_service_default