1 files changed, 4 insertions, 4 deletions
diff --git a/activeresource/lib/active_resource/formats.rb b/activeresource/lib/active_resource/formats.rb
index 28864cf588..53b75b34e7 100644
--- a/activeresource/lib/active_resource/formats.rb
+++ b/activeresource/lib/active_resource/formats.rb
@@ -1,14 +1,14 @@
 module ActiveResource
   module Formats
+    autoload :XmlFormat, 'active_resource/formats/xml_format'
+    autoload :JsonFormat, 'active_resource/formats/json_format'
+
     # Lookup the format class from a mime type reference symbol. Example:
     #
     #   ActiveResource::Formats[:xml]  # => ActiveResource::Formats::XmlFormat
     #   ActiveResource::Formats[:json] # => ActiveResource::Formats::JsonFormat
     def self.[](mime_type_reference)
-      ActiveResource::Formats.const_get(mime_type_reference.to_s.camelize + "Format")
+      ActiveResource::Formats.const_get(ActiveSupport::Inflector.camelize(mime_type_reference.to_s) + "Format")
     end
   end
 end
-
-require 'active_resource/formats/xml_format'
-require 'active_resource/formats/json_format'
-\ No newline at end of file