diff --git a/manifests/params.pp b/manifests/params.pp
index d1c6608..0f926e0 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -18,7 +18,7 @@ class alloy_cd::params (
   String $pkg_ensure          = 'latest',
 
 # loki
-  String $ay_manage_loki      = true,
+  Boolean $ay_manage_loki      = true,
   String $ay_loki_url         = 'https://loki.example.net/loki/api/v1/push',
   String $ay_loki_username    = 'loki_user',
   String $ay_loki_userpass    = 'loki_pass',