diff --git a/CHANGELOG b/CHANGELOG
index 65af3ba..7c46ec5 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,6 +1,7 @@
 *0.9.1*
 
 * Rails 2.3 compatibility
+* Prefer Rails.root to RAILS_ROOT
 
 *0.9.0*
 
diff --git a/lib/unit_record/disconnected_active_record.rb b/lib/unit_record/disconnected_active_record.rb
index 6a5af1a..608c348 100644
--- a/lib/unit_record/disconnected_active_record.rb
+++ b/lib/unit_record/disconnected_active_record.rb
@@ -14,7 +14,11 @@ def disconnect!(options = {})
       UnitRecord.base_rails_test_class.disconnect!
       ActiveRecord::Migration.verbose = false
       ActiveRecord::Base.connection.change_strategy(:noop) do
-        load(RAILS_ROOT + "/db/schema.rb")
+        if defined?(Rails.root) && Rails.root
+          load(File.join(Rails.root, 'db', 'schema.rb'))
+        else
+          load(RAILS_ROOT + "/db/schema.rb")
+        end
       end
     end
   end