diff --git a/manifests/profile/params.pp b/manifests/profile/params.pp
index 582aea21..c030e3bf 100644
--- a/manifests/profile/params.pp
+++ b/manifests/profile/params.pp
@@ -205,7 +205,7 @@ class ceph::profile::params (
   $mon_key = undef,
   $mgr_key = undef,
   $mon_keyring = undef,
-  $client_keys = {},
+  Hash $client_keys = {},
   $osds = undef,
   $manage_repo = true,
   $rgw_name = undef,
@@ -233,8 +233,6 @@ class ceph::profile::params (
   $pid_max = undef,
 ) {
 
-  validate_legacy(Hash, 'validate_hash', $client_keys)
-
   if $pid_max != undef {
     warning('pid_max parameter is deprecated and has no effect.')
   }