diff --git a/ChangeLog b/ChangeLog
index 4fe4551d9..8e286874a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,6 @@
 2014-05-08  TADA Tadashi <t@tdtds.jp>
 	* fix error on image when edit mode #412
+	* remove mobile link discovery tag because it is obsolete.
 
 2014-02-21  TADA Tadashi <t@tdtds.jp>
 	* add theme_online plugin #291
diff --git a/plugin/00default.rb b/plugin/00default.rb
index 8cc5f5540..715595933 100644
--- a/plugin/00default.rb
+++ b/plugin/00default.rb
@@ -211,7 +211,6 @@ def doctype
 	#{author_name_tag}
 	#{author_mail_tag}
 	#{index_page_tag}
-	#{mobile_link_discovery}
 	#{icon_tag}
 	#{default_ogp}
 	#{description_tag}
@@ -322,17 +321,6 @@ def index_page_tag
 	result.chop.chop
 end
 
-def mobile_link_discovery
-  return '' unless /^(latest|day)$/ =~ @mode
-  uri = @conf.index.dup
-  uri[0, 0] = base_url if %r|^https?://|i !~ @conf.index
-  uri.gsub!( %r|/\./|, '/' )
-  if @mode == 'day' then
-    uri += anchor( @date.strftime( '%Y%m%d' ) )
-  end
-  %Q[<link rel="alternate" media="handheld" type="text/html" href="#{h uri}">]
-end
-
 def icon_tag
 	if @conf.icon and not(@conf.icon.empty?) then
 		if /\.ico$/ =~ @conf.icon then