diff --git a/app/models/post.rb b/app/models/post.rb
index a039fff35..d5dc75bdd 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -294,11 +294,7 @@ class Post < ActiveRecord::Base
       if source =~ /pixiv\.net\/img/
         img_id = source[/(\d+)(_s|_m|(_big)?_p\d+)?\.[\w\?]+\s*$/, 1]
 
-        if $2 =~ /_p/
-          "http://www.pixiv.net/member_illust.php?mode=manga&illust_id=#{img_id}"
-        else
-          "http://www.pixiv.net/member_illust.php?mode=medium&illust_id=#{img_id}"
-        end
+        "http://www.pixiv.net/member_illust.php?mode=medium&illust_id=#{img_id}"
       else
         source
       end