diff --git a/activerecord/lib/active_record/autosave_association.rb b/activerecord/lib/active_record/autosave_association.rb
index 87d4daa6d94d9..a8a184755468b 100644
--- a/activerecord/lib/active_record/autosave_association.rb
+++ b/activerecord/lib/active_record/autosave_association.rb
@@ -301,7 +301,7 @@ def validate_collection_association(reflection)
     def association_valid?(reflection, record)
       return true if record.destroyed? || record.marked_for_destruction?
 
-      unless valid = record.valid?(validation_context)
+      unless valid = record.valid?
         if reflection.options[:autosave]
           record.errors.each do |attribute, message|
             attribute = "#{reflection.name}.#{attribute}"
diff --git a/activerecord/lib/active_record/validations/associated.rb b/activerecord/lib/active_record/validations/associated.rb
index 744780d069e2b..b4785d3ba45a5 100644
--- a/activerecord/lib/active_record/validations/associated.rb
+++ b/activerecord/lib/active_record/validations/associated.rb
@@ -2,7 +2,7 @@ module ActiveRecord
   module Validations
     class AssociatedValidator < ActiveModel::EachValidator #:nodoc:
       def validate_each(record, attribute, value)
-        if Array.wrap(value).reject {|r| r.marked_for_destruction? || r.valid?(record.validation_context) }.any?
+        if Array.wrap(value).reject {|r| r.marked_for_destruction? || r.valid?}.any?
           record.errors.add(attribute, :invalid, options.merge(:value => value))
         end
       end
diff --git a/activerecord/test/cases/validations/association_validation_test.rb b/activerecord/test/cases/validations/association_validation_test.rb
index 7ac34bc71eae4..7e92a2b127f39 100644
--- a/activerecord/test/cases/validations/association_validation_test.rb
+++ b/activerecord/test/cases/validations/association_validation_test.rb
@@ -118,21 +118,4 @@ def test_validates_presence_of_belongs_to_association__existing_parent
     end
   end
 
-  def test_validates_associated_models_in_the_same_context
-    Topic.validates_presence_of :title, :on => :custom_context
-    Topic.validates_associated :replies
-    Reply.validates_presence_of :title, :on => :custom_context
-
-    t = Topic.new('title' => '')
-    r = t.replies.new('title' => '')
-
-    assert t.valid?
-    assert !t.valid?(:custom_context)
-
-    t.title = "Longer"
-    assert !t.valid?(:custom_context), "Should NOT be valid if the associated object is not valid in the same context."
-
-    r.title = "Longer"
-    assert t.valid?(:custom_context), "Should be valid if the associated object is not valid in the same context."
-  end
 end
diff --git a/railties/test/application/rake_test.rb b/railties/test/application/rake_test.rb
index 00a4ab06aaa6c..cfa5cc1322201 100644
--- a/railties/test/application/rake_test.rb
+++ b/railties/test/application/rake_test.rb
@@ -159,7 +159,8 @@ def test_rake_routes_with_controller_environment
         end
       RUBY
 
-      output = Dir.chdir(app_path){ `CONTROLLER=cart rake routes` }
+      ENV['CONTROLLER'] = 'cart'
+      output = Dir.chdir(app_path){ `rake routes` }
       assert_equal "Prefix Verb URI Pattern     Controller#Action\ncart GET /cart(.:format) cart#show\n", output
     end