diff --git a/app/models/article_block.rb b/app/models/article_block.rb
index ef7d27d..135738d 100644
--- a/app/models/article_block.rb
+++ b/app/models/article_block.rb
@@ -4,7 +4,7 @@ class ArticleBlock < Block
     _('Display one of your contents.')
   end
 
-  def content(main = nil)
+  def content
     article ? article.to_html : _('Article not selected yet.')
   end
 
diff --git a/app/models/block.rb b/app/models/block.rb
index ab750bb..1b9e91e 100644
--- a/app/models/block.rb
+++ b/app/models/block.rb
@@ -26,7 +26,7 @@ class Block < ActiveRecord::Base
     _('A dummy block.')
   end
 
-  def content(main_content = nil)
+  def content
     "This is block number %d" % self.id
   end
 
diff --git a/app/models/main_block.rb b/app/models/main_block.rb
index c73d546..0d1a8a5 100644
--- a/app/models/main_block.rb
+++ b/app/models/main_block.rb
@@ -4,7 +4,7 @@ class MainBlock < Block
     _('Block for main content (i.e. your articles, photos, etc)')
   end
 
-  def content(main_content = nil)
+  def content
     main_content
   end
 
diff --git a/app/models/tags_block.rb b/app/models/tags_block.rb
index 8927ce9..d22b22c 100644
--- a/app/models/tags_block.rb
+++ b/app/models/tags_block.rb
@@ -7,7 +7,7 @@ class TagsBlock < Block
     _('List count of contents by tag')
   end
 
-  def content(main_content = nil)
+  def content
     content_tag('h3', _('Tags'), :class => 'block-title') +
     tag_cloud(owner.tags, :id, owner.generate_url(:controller => 'profile', :action => 'tag') + '/', :max_size => 20, :min_size => 10)
   end
--
libgit2 0.21.2