diff --git a/app/models/site_construct.rb b/app/models/site_construct.rb
index 19d8930..a9fe5db 100644
--- a/app/models/site_construct.rb
+++ b/app/models/site_construct.rb
@@ -117,7 +117,7 @@ class SiteConstruct
     end
     domain_name_str = self.domain_name
     if default_domain.present?
-      domain_name_str = ([default_domain] + (domain_name_str.split(/\s+/) - [default_domain])).join(" ")
+      domain_name_str = ((domain_name_str.split(/\s+/) - [default_domain]) + [default_domain]).join(" ")
     end
     if old_server_block.present?   
       new_server_block = old_server_block.gsub(/(listen\s+)[^;]+/){|ff| "#{$1}#{port_text}"}