diff --git a/manifests/config.pp b/manifests/config.pp
index 9a1bbc5..3b94704 100644
--- a/manifests/config.pp
+++ b/manifests/config.pp
@@ -34,8 +34,8 @@ class freezer::config (
 
   include ::freezer::deps
 
-  validate_hash($freezer_config)
-  validate_hash($api_paste_ini_config)
+  validate_legacy(Hash, 'validate_hash', $freezer_config)
+  validate_legacy(Hash, 'validate_hash', $api_paste_ini_config)
 
   create_resources('freezer_config', $freezer_config)
   create_resources('freezer_api_paste_ini', $api_paste_ini_config)
diff --git a/manifests/db.pp b/manifests/db.pp
index 41bd315..91fa4a3 100644
--- a/manifests/db.pp
+++ b/manifests/db.pp
@@ -56,8 +56,8 @@ class freezer::db (
 
   include ::freezer::deps
 
-  validate_re($database_connection,
-    '^(sqlite|mysql(\+pymysql)?|postgresql):\/\/(\S+:\S+@\S+\/\S+)?')
+  validate_legacy(Oslo::Dbconn, 'validate_re', $database_connection,
+    ['^(sqlite|mysql(\+pymysql)?|postgresql):\/\/(\S+:\S+@\S+\/\S+)?'])
 
   oslo::db { 'freezer_config':
     connection     => $database_connection,
diff --git a/manifests/db/mysql.pp b/manifests/db/mysql.pp
index 3807af9..e1d1bbe 100644
--- a/manifests/db/mysql.pp
+++ b/manifests/db/mysql.pp
@@ -45,7 +45,7 @@ class freezer::db::mysql(
 
   include ::freezer::deps
 
-  validate_string($password)
+  validate_legacy(String, 'validate_string', $password)
 
   ::openstacklib::db::mysql { 'freezer':
     user          => $user,
diff --git a/manifests/policy.pp b/manifests/policy.pp
index c6c8192..ec316c1 100644
--- a/manifests/policy.pp
+++ b/manifests/policy.pp
@@ -31,7 +31,7 @@ class freezer::policy (
   include ::freezer::deps
   include ::freezer::params
 
-  validate_hash($policies)
+  validate_legacy(Hash, 'validate_hash', $policies)
 
   Openstacklib::Policy::Base {
     file_path  => $policy_path,