diff --git a/manifests/plugin/dns/infoblox.pp b/manifests/plugin/dns/infoblox.pp
index 361b82bc..9696fb6a 100644
--- a/manifests/plugin/dns/infoblox.pp
+++ b/manifests/plugin/dns/infoblox.pp
@@ -11,7 +11,7 @@
 # $password::   The password of the Infoblox user
 #
 class foreman_proxy::plugin::dns::infoblox (
-  String $dns_server = undef,
+  Stdlib::Host $dns_server = undef,
   String $username = undef,
   String $password = undef,
 ) {