diff --git a/lib/devise/active_record.rb b/lib/devise/active_record.rb
index 6a236b1a..0e24af1c 100644
--- a/lib/devise/active_record.rb
+++ b/lib/devise/active_record.rb
@@ -68,9 +68,6 @@ module Devise
         include Devise::Models.const_get(m.to_s.classify)
       end
 
-      # Assert valid keys after including modules to ensure MODEL_CONFIG is fully loaded
-      options.assert_valid_keys(:except, *Devise::MODEL_CONFIG)
-
       # Convert new keys to methods which overwrites Devise defaults
       options.each { |key, value| send(:"#{key}=", value) }
     end
diff --git a/lib/devise/models/confirmable.rb b/lib/devise/models/confirmable.rb
index 89ea8ad4..89ccd585 100644
--- a/lib/devise/models/confirmable.rb
+++ b/lib/devise/models/confirmable.rb
@@ -1,3 +1,5 @@
+require 'devise/hooks/confirmable'
+
 module Devise
   module Models
 
@@ -27,7 +29,6 @@ module Devise
     #   User.find(1).send_confirmation_instructions # manually send instructions
     #   User.find(1).reset_confirmation! # reset confirmation status and send instructions
     module Confirmable
-      Devise.model_config(self, :confirm_in, 0.days)
 
       def self.included(base)
         base.class_eval do
@@ -158,6 +159,8 @@ module Devise
           confirmable
         end
       end
+
+      Devise.model_config(self, :confirm_in, 0.days)
     end
   end
 end
diff --git a/lib/devise/models/rememberable.rb b/lib/devise/models/rememberable.rb
index 05857c4c..0643972c 100644
--- a/lib/devise/models/rememberable.rb
+++ b/lib/devise/models/rememberable.rb
@@ -32,7 +32,6 @@ module Devise
     #   # lookup the user based on the incoming cookie information
     #   User.serialize_from_cookie(cookie_string)
     module Rememberable
-      Devise.model_config(self, :remember_for, 2.weeks)
 
       def self.included(base)
         base.class_eval do
@@ -63,12 +62,12 @@ module Devise
 
       # Checks whether the incoming token matches or not with the record token.
       def valid_remember_token?(token)
-        !remember_expired? && remember_token == token
+        remember_token? && !remember_expired? && remember_token == token
       end
 
       # Remember token should be expired if expiration time not overpass now.
       def remember_expired?
-        !remember_token? || remember_expires_at <= Time.now.utc
+        remember_expires_at <= Time.now
       end
 
       # Remember token expires at created time + remember_for configuration
@@ -89,8 +88,9 @@ module Devise
           rememberable = find_by_id(rememberable_id) if rememberable_id
           rememberable if rememberable.try(:valid_remember_token?, remember_token)
         end
-
       end
+
+      Devise.model_config(self, :remember_for, 2.weeks)
     end
   end
 end
diff --git a/test/models/rememberable_test.rb b/test/models/rememberable_test.rb
index c44bfa44..1cc6f304 100644
--- a/test/models/rememberable_test.rb
+++ b/test/models/rememberable_test.rb
@@ -108,11 +108,6 @@ class RememberableTest < ActiveSupport::TestCase
     end
   end
 
-  test 'remember should be expired without remember token' do
-    user = create_user
-    assert user.remember_expired?
-  end
-
   test 'remember expires at should sum date of creation with remember for configuration' do
     Devise.remember_for = 3.days
     user = create_user