diff --git a/app/models/blog.rb b/app/models/blog.rb
index ea56fd0..7ce092a 100644
--- a/app/models/blog.rb
+++ b/app/models/blog.rb
@@ -53,7 +53,7 @@ class Blog < Folder
   def prepare_external_feed
     unless self.external_feed_data.nil?
       if self.external_feed(true) && self.external_feed.id == self.external_feed_data[:id].to_i
-        self.external_feed.attributes = self.external_feed_data
+        self.external_feed.attributes = self.external_feed_data.except(:id)
       else
         self.build_external_feed(self.external_feed_data, :without_protection => true)
       end
diff --git a/app/models/external_feed.rb b/app/models/external_feed.rb
index 91c3773..40f018a 100644
--- a/app/models/external_feed.rb
+++ b/app/models/external_feed.rb
@@ -10,7 +10,7 @@ class ExternalFeed < ActiveRecord::Base
     { :conditions => ['(fetched_at is NULL) OR (fetched_at < ?)', Time.now - FeedUpdater.update_interval] }
   }
 
-  attr_accessible :address, :enabled
+  attr_accessible :address, :enabled, :only_once
 
   def add_item(title, link, date, content)
     return if content.blank?
diff --git a/test/unit/external_feed_test.rb b/test/unit/external_feed_test.rb
index 09337b8..9aeebff 100644
--- a/test/unit/external_feed_test.rb
+++ b/test/unit/external_feed_test.rb
@@ -176,4 +176,13 @@ class ExternalFeedTest < ActiveSupport::TestCase
 
   end
 
+  should 'allow mass assign attributes' do
+    p = create_user('testuser').person
+    blog = fast_create(Blog, :profile_id => p.id, :name => 'Blog test')
+
+    assert_difference 'ExternalFeed.count', 1 do
+      efeed = blog.create_external_feed(:address => 'http://invalid.url', :enabled => true, :only_once => 'false')
+    end
+  end
+
 end
--
libgit2 0.21.2