diff --git a/lib/compass.rb b/lib/compass.rb
index 081b0538..97ec92b7 100644
--- a/lib/compass.rb
+++ b/lib/compass.rb
@@ -30,3 +30,6 @@ end
 %w(configuration frameworks app_integration actions compiler).each do |lib|
   require "compass/#{lib}"
 end
+
+# for rails upgrade warnings in 0.12
+require 'compass/app_integration/rails'
diff --git a/lib/compass/app_integration/rails.rb b/lib/compass/app_integration/rails.rb
new file mode 100644
index 00000000..9b64f4be
--- /dev/null
+++ b/lib/compass/app_integration/rails.rb
@@ -0,0 +1,18 @@
+module Compass
+  module AppIntegration
+    module Rails
+      extend self
+      def initialize!
+        Compass::Util.compass_warn("WARNING:  Please remove the call to Compass::AppIntegration::Rails.initialize! from #{caller[0].sub(/:.*$/,'')};\nWARNING:  This is done automatically now. If this is default compass initializer you can just remove the file.")
+      end
+      def root
+        Compass::Util.compass_warn("WARNING:  Please remove the call to Compass::AppIntegration::Rails.root from #{caller[0].sub(/:.*$/,'')};\nWARNING:  This is done automatically now. If this is default compass initializer you can just remove the file.")
+        ::Rails.root
+      end
+      def env
+        Compass::Util.compass_warn("WARNING:  Please remove the call to Compass::AppIntegration::Rails.env from #{caller[0].sub(/:.*$/,'')};\nWARNING:  This is done automatically now. If this is default compass initializer you can just remove the file.")
+        ::Rails.env
+      end
+    end
+  end
+end