diff --git a/global/overlay/etc/puppet/modules/cdn/manifests/cache.pp b/global/overlay/etc/puppet/modules/cdn/manifests/cache.pp
index 232bbdb..4281cad 100644
--- a/global/overlay/etc/puppet/modules/cdn/manifests/cache.pp
+++ b/global/overlay/etc/puppet/modules/cdn/manifests/cache.pp
@@ -1,6 +1,6 @@
 # Configure a SUNET CDN CA server
 class cdn::ca(
-  Hash[String, Integer] customers = {
+  Hash[String, Integer] $customers = {
     customer1 => 1000000000,
   }
 )