diff --git a/app/models/artist_url.rb b/app/models/artist_url.rb
index 721da7bcc..6223b346b 100644
--- a/app/models/artist_url.rb
+++ b/app/models/artist_url.rb
@@ -13,7 +13,7 @@ class ArtistUrl < ActiveRecord::Base
       url = url.gsub(/^http:\/\/blog\d+\.fc2/, "http://blog.fc2")
       url = url.gsub(/^http:\/\/blog-imgs-\d+\.fc2/, "http://blog.fc2")
       url = url.gsub(/^http:\/\/blog-imgs-\d+-\w+\.fc2/, "http://blog.fc2")
-      url = url.sub(%r!(http://seiga.nicovideo.jp/user/illust/\d+)\?.+!, '\1')
+      url = url.sub(%r!(http://seiga.nicovideo.jp/user/illust/\d+)\?.+!, '\1/')
       url = url.sub(%r!^http://pictures.hentai-foundry.com//!, "http://pictures.hentai-foundry.com/")
       begin
         url = Sources::Site.new(url).normalize_for_artist_finder!
diff --git a/script/fixes/046_fix_nicovideo_artist_urls.rb b/script/fixes/046_fix_nicovideo_artist_urls.rb
index 559c47574..71031fea7 100644
--- a/script/fixes/046_fix_nicovideo_artist_urls.rb
+++ b/script/fixes/046_fix_nicovideo_artist_urls.rb
@@ -5,7 +5,7 @@ require File.expand_path(File.join(File.dirname(__FILE__), '..', '..', 'config',
 ActiveRecord::Base.without_timeout do
   ArtistUrl.where("normalized_url like ?", "\%nico\%").find_each do |url|
     before = url.normalized_url
-    url.normalized_url = Sources::Site.new(before).normalize_for_artist_finder!
+    url.normalize!
     puts "#{before} -> #{url.normalized_url}" if before != url.normalized_url
   end
 end