diff --git a/site-modules/profile/manifests/puppetserver/authority.pp b/site-modules/profile/manifests/puppetserver/authority.pp
index e869191..5e5102e 100644
--- a/site-modules/profile/manifests/puppetserver/authority.pp
+++ b/site-modules/profile/manifests/puppetserver/authority.pp
@@ -1,8 +1,8 @@
 class profile::puppetserver::authority (
 
-  String $jwt_secret = 'undef',
+  String "$jwt_secret" = 'undef',
   String $loglevel   = 'info',
-  Integer $validity  = '0',
+  Integer "$validity"  = '0',
   String $ensure     = 'latest',
   Hash $config       = {},
   Hash $jwt_token    = {},
@@ -22,8 +22,8 @@ class profile::puppetserver::authority (
         loglevel => $loglevel,
       },
       jwt_token => {
-        secret   => $jwt_secret,
-        validity => $validity,
+        secret   => "$jwt_secret",
+        validity => "$validity",
       }
     },
   }