diff --git a/doc/puppet_classes/cd_alloy_3A_3Aparams.html b/doc/puppet_classes/cd_alloy_3A_3Aparams.html
index 811014f..e9b6ae9 100644
--- a/doc/puppet_classes/cd_alloy_3A_3Aparams.html
+++ b/doc/puppet_classes/cd_alloy_3A_3Aparams.html
@@ -258,7 +258,7 @@ $ay_service         = 'alloy'
 $ay_main_dir        = '/etc/alloy'
 
 # files
-$ay_main_file       = "$(ay_main_dir)/config.alloy"
+$ay_main_file       = "${ay_main_dir}/config.alloy"
 
 
   # includes must be last