diff --git a/lib/compass/app_integration/rails/installer.rb b/lib/compass/app_integration/rails/installer.rb
index 2308297c..a81e2469 100644
--- a/lib/compass/app_integration/rails/installer.rb
+++ b/lib/compass/app_integration/rails/installer.rb
@@ -93,7 +93,7 @@ module Compass
           %Q{require 'compass'
   # If you have any compass plugins, require them here.
   Compass.configuration.parse(File.join(RAILS_ROOT, "config", "compass.rb"))
-  Compass.configuration.environment = RAILS_ENV.to_sym
+  Compass.configuration.environment = (defined?(Rails) ? Rails.env : RAILS_ENV).to_sym
   Compass.configure_sass_plugin!
   }
         end