diff --git a/slack-pixiv.rb b/slack-pixiv.rb
index 8e1ddda..2a8cec7 100644
--- a/slack-pixiv.rb
+++ b/slack-pixiv.rb
@@ -2,6 +2,7 @@ require 'slack-ruby-bot'
 require 'wolfram'
 require 'mechanize'
 require 'nokogiri'
+require 'uri'
 require 'slack-pixiv/commands/illust'
 require 'slack-pixiv/commands/member'
 require 'slack-pixiv/app'
diff --git a/slack-pixiv/commands/illust.rb b/slack-pixiv/commands/illust.rb
index 566ebdf..ba765e6 100644
--- a/slack-pixiv/commands/illust.rb
+++ b/slack-pixiv/commands/illust.rb
@@ -15,6 +15,7 @@ module SlackMathbot
         else
           pixiv_url = "http://www.pixiv.net/member_illust.php" + _match[:url][0..-1]
         end
+        pixiv_url = URI.unescape(pixiv_url)
         puts pixiv_url
 
         # Create iOS Illustration URL, regex pixiv_url to