diff --git a/templates/domain.erb b/templates/domain.erb
index 8eb788d..5bc1009 100644
--- a/templates/domain.erb
+++ b/templates/domain.erb
@@ -109,6 +109,6 @@ proxy_lib_name = <%= @proxy_lib_name %>
 <% end -%>
 <% if @custom_options %>
 <% @custom_options.each do |opt,value| -%>
-<%= $opt %> = <%= $value %>
-<% end %>
+<%= opt %> = <%= value %>
+<% end -%>
 <% end -%>