diff --git a/lib/simple_form/inputs/base.rb b/lib/simple_form/inputs/base.rb
index 9a3cbf0b..713bf886 100644
--- a/lib/simple_form/inputs/base.rb
+++ b/lib/simple_form/inputs/base.rb
@@ -174,6 +174,7 @@ module SimpleForm
           lookups << :"#{joined_model_names}.#{reflection_or_attribute_name}"
         end
         lookups << :"#{reflection_or_attribute_name}"
+        lookups.map! {|lookup| :"#{lookup}.#{default}"} if namespace == :options
         lookups << default
 
         I18n.t(lookups.shift, :scope => :"simple_form.#{namespace}", :default => lookups).presence
diff --git a/lib/simple_form/inputs/collection_input.rb b/lib/simple_form/inputs/collection_input.rb
index ef8e51e4..cfdd24cc 100644
--- a/lib/simple_form/inputs/collection_input.rb
+++ b/lib/simple_form/inputs/collection_input.rb
@@ -55,7 +55,12 @@ module SimpleForm
           value ||= common_method_for[:value]
         end
 
-        [label, value]
+        if SimpleForm.translate && [label, value] == [:to_s, :to_s]
+          translate_collection
+          [:first, :last]
+        else
+          [label, value]
+        end
       end
 
       def detect_common_display_methods
@@ -82,6 +87,10 @@ module SimpleForm
           String, Integer, Fixnum, Bignum, Float, NilClass, Symbol, TrueClass, FalseClass
         ]).any?
       end
+
+      def translate_collection
+        collection.map! {|value| [translate(:options, value.to_s), value.to_s]}
+      end
     end
   end
 end
diff --git a/test/inputs_test.rb b/test/inputs_test.rb
index bd25c043..fa64b923 100644
--- a/test/inputs_test.rb
+++ b/test/inputs_test.rb
@@ -611,6 +611,17 @@ class InputTest < ActionView::TestCase
     assert_select 'select option', 'Carlos'
   end
 
+  test 'input should allow translating collection for select types' do
+    store_translations(:en, :simple_form => { :options => {
+      :gender => { :male => 'Male', :female => 'Female'}
+    } } ) do
+      with_input_for @user, :gender, :select, :collection => [:male, :female]
+      assert_select 'select.select#user_gender'
+      assert_select 'select option', 'Male'
+      assert_select 'select option', 'Female'
+    end
+  end
+
   test 'input should mark the selected value by default' do
     @user.name = "Carlos"
     with_input_for @user, :name, :select, :collection => ['Jose', 'Carlos']
@@ -687,7 +698,19 @@ class InputTest < ActionView::TestCase
     assert_select 'label.collection_radio', 'Carlos'
   end
 
-  test 'input should mark the current radio value by default' do
+  test 'input should allow translation of collection for radio types' do
+    store_translations(:en, :simple_form => { :options => { :user => {
+      :gender => { :male => 'Male', :female => 'Female'}
+    } } }) do
+      with_input_for @user, :gender, :radio, :collection => [:male, :female]
+      assert_select 'input[type=radio][value=male]'
+      assert_select 'input[type=radio][value=female]'
+      assert_select 'label.collection_radio', 'Male'
+      assert_select 'label.collection_radio', 'Female'
+    end
+  end
+
+   test 'input should mark the current radio value by default' do
     @user.name = "Carlos"
     with_input_for @user, :name, :radio, :collection => ['Jose', 'Carlos']
     assert_select 'input[type=radio][value=Carlos][checked=checked]'
diff --git a/test/support/models.rb b/test/support/models.rb
index a38d21b9..feb142b5 100644
--- a/test/support/models.rb
+++ b/test/support/models.rb
@@ -42,7 +42,7 @@ class User
     :description, :created_at, :updated_at, :credit_limit, :password, :url,
     :delivery_time, :born_at, :special_company_id, :country, :tags, :tag_ids,
     :avatar, :home_picture, :email, :status, :residence_country, :phone_number,
-    :post_count, :lock_version, :amount, :attempts, :action
+    :post_count, :lock_version, :amount, :attempts, :action, :gender
 
   def initialize(options={})
     options.each do |key, value|