diff --git a/app/scripts/config_installer.rb b/app/scripts/config_installer.rb
index df7a340..b632bb3 100755
--- a/app/scripts/config_installer.rb
+++ b/app/scripts/config_installer.rb
@@ -65,6 +65,8 @@ def create_vhost_conf(index)
       ("  ServerAlias #{app['aliases']}" unless app['aliases'].empty?),
       "  DocumentRoot \"#{public_dir}\"",
       "  #{app['app_type'].capitalize}Env #{app['environment']}",
+      # allow for later upgrade to rails 3 with config.ru file
+      ("  RackEnv #{app['environment']}" if app['app_type']=="rails"),
       (app['user_defined_data'] unless app['user_defined_data'].empty?),
       "</VirtualHost>"
     ].compact.join("\n")
diff --git a/test/config_installer_test.rb b/test/config_installer_test.rb
index 7672dd1..bbc7da3 100644
--- a/test/config_installer_test.rb
+++ b/test/config_installer_test.rb
@@ -56,6 +56,7 @@
   ServerAlias manfred-s-blog.local my-blog.local
   DocumentRoot "/User/het-manfred/rails code/blog/public"
   RailsEnv production
+  RackEnv production
   <Directory \"/User/het-manfred/rails code/blog/public\">
     Order allow,deny
     Allow from all