diff --git a/lib/simple_form.rb b/lib/simple_form.rb
index 374abb1d..f916e968 100644
--- a/lib/simple_form.rb
+++ b/lib/simple_form.rb
@@ -6,14 +6,25 @@ require 'active_support/core_ext/hash/except'
 require 'active_support/core_ext/hash/reverse_merge'
 
 module SimpleForm
-  autoload :Components,        'simple_form/components'
-  autoload :ErrorNotification, 'simple_form/error_notification'
-  autoload :FormBuilder,       'simple_form/form_builder'
-  autoload :Helpers,           'simple_form/helpers'
-  autoload :I18nCache,         'simple_form/i18n_cache'
-  autoload :Inputs,            'simple_form/inputs'
-  autoload :MapType,           'simple_form/map_type'
-  autoload :Wrappers,          'simple_form/wrappers'
+  extend ActiveSupport::Autoload
+
+  autoload :Helpers
+  autoload :Wrappers
+
+  eager_autoload do
+    autoload :Components
+    autoload :ErrorNotification
+    autoload :FormBuilder
+    autoload :I18nCache
+    autoload :Inputs
+    autoload :MapType
+  end
+
+  def self.eager_load!
+    super
+    SimpleForm::Inputs.eager_load!
+    SimpleForm::Components.eager_load!
+  end
 
   ## CONFIGURATION OPTIONS
 
@@ -195,3 +206,5 @@ module SimpleForm
     yield self
   end
 end
+
+require 'simple_form/railtie' if defined?(Rails)
diff --git a/lib/simple_form/components.rb b/lib/simple_form/components.rb
index 6b7e414c..4615718b 100644
--- a/lib/simple_form/components.rb
+++ b/lib/simple_form/components.rb
@@ -6,15 +6,17 @@ module SimpleForm
   # to the input in order to be enabled. On the other hand, things like
   # hints can generate output automatically by doing I18n lookups.
   module Components
-    autoload :Errors,       'simple_form/components/errors'
-    autoload :Hints,        'simple_form/components/hints'
-    autoload :HTML5,        'simple_form/components/html5'
-    autoload :LabelInput,   'simple_form/components/label_input'
-    autoload :Labels,       'simple_form/components/labels'
-    autoload :MinMax,       'simple_form/components/min_max'
-    autoload :Maxlength,    'simple_form/components/maxlength'
-    autoload :Pattern,      'simple_form/components/pattern'
-    autoload :Placeholders, 'simple_form/components/placeholders'
-    autoload :Readonly,     'simple_form/components/readonly'
+    extend ActiveSupport::Autoload
+
+    autoload :Errors
+    autoload :Hints
+    autoload :HTML5
+    autoload :LabelInput
+    autoload :Labels
+    autoload :MinMax
+    autoload :Maxlength
+    autoload :Pattern
+    autoload :Placeholders
+    autoload :Readonly
   end
 end
diff --git a/lib/simple_form/inputs.rb b/lib/simple_form/inputs.rb
index 94e9d1e9..fba0cf4a 100644
--- a/lib/simple_form/inputs.rb
+++ b/lib/simple_form/inputs.rb
@@ -1,21 +1,23 @@
 module SimpleForm
   module Inputs
-    autoload :Base,                         'simple_form/inputs/base'
-    autoload :BlockInput,                   'simple_form/inputs/block_input'
-    autoload :BooleanInput,                 'simple_form/inputs/boolean_input'
-    autoload :CollectionCheckBoxesInput,    'simple_form/inputs/collection_check_boxes_input'
-    autoload :CollectionInput,              'simple_form/inputs/collection_input'
-    autoload :CollectionRadioButtonsInput,  'simple_form/inputs/collection_radio_buttons_input'
-    autoload :CollectionSelectInput,        'simple_form/inputs/collection_select_input'
-    autoload :DateTimeInput,                'simple_form/inputs/date_time_input'
-    autoload :FileInput,                    'simple_form/inputs/file_input'
-    autoload :GroupedCollectionSelectInput, 'simple_form/inputs/grouped_collection_select_input'
-    autoload :HiddenInput,                  'simple_form/inputs/hidden_input'
-    autoload :NumericInput,                 'simple_form/inputs/numeric_input'
-    autoload :PasswordInput,                'simple_form/inputs/password_input'
-    autoload :PriorityInput,                'simple_form/inputs/priority_input'
-    autoload :RangeInput,                   'simple_form/inputs/range_input'
-    autoload :StringInput,                  'simple_form/inputs/string_input'
-    autoload :TextInput,                    'simple_form/inputs/text_input'
+    extend ActiveSupport::Autoload
+
+    autoload :Base
+    autoload :BlockInput
+    autoload :BooleanInput
+    autoload :CollectionCheckBoxesInput
+    autoload :CollectionInput
+    autoload :CollectionRadioButtonsInput
+    autoload :CollectionSelectInput
+    autoload :DateTimeInput
+    autoload :FileInput
+    autoload :GroupedCollectionSelectInput
+    autoload :HiddenInput
+    autoload :NumericInput
+    autoload :PasswordInput
+    autoload :PriorityInput
+    autoload :RangeInput
+    autoload :StringInput
+    autoload :TextInput
   end
 end
diff --git a/lib/simple_form/railtie.rb b/lib/simple_form/railtie.rb
new file mode 100644
index 00000000..35b722be
--- /dev/null
+++ b/lib/simple_form/railtie.rb
@@ -0,0 +1,7 @@
+require 'rails/railtie'
+
+module SimpleForm
+  class Railtie < Rails::Railtie
+    config.eager_load_namespaces << SimpleForm
+  end
+end