diff --git a/app/logical/source/url/anifty.rb b/app/logical/source/url/anifty.rb
index 3d942d97c..ec3d8fae2 100644
--- a/app/logical/source/url/anifty.rb
+++ b/app/logical/source/url/anifty.rb
@@ -41,6 +41,7 @@ class Source::URL::Anifty < Source::URL
       @username = $1
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/art_station.rb b/app/logical/source/url/art_station.rb
index 25cc31404..eb57a0578 100644
--- a/app/logical/source/url/art_station.rb
+++ b/app/logical/source/url/art_station.rb
@@ -60,6 +60,7 @@ class Source::URL::ArtStation < Source::URL
       @username = subdomain
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/booth.rb b/app/logical/source/url/booth.rb
index d8d272bd0..1be6e2cef 100644
--- a/app/logical/source/url/booth.rb
+++ b/app/logical/source/url/booth.rb
@@ -62,6 +62,7 @@ module Source
         @username = username
 
       else
+        nil
       end
     end
 
diff --git a/app/logical/source/url/deviant_art.rb b/app/logical/source/url/deviant_art.rb
index 1f18e0daf..3d26bcd56 100644
--- a/app/logical/source/url/deviant_art.rb
+++ b/app/logical/source/url/deviant_art.rb
@@ -92,6 +92,7 @@ module Source
         @stash_id = stash_id
 
       else
+        nil
       end
     end
 
@@ -128,6 +129,7 @@ module Source
         @username = $2.dasherize
 
       else
+        nil
       end
     end
 
diff --git a/app/logical/source/url/fanbox.rb b/app/logical/source/url/fanbox.rb
index 094bf7bd5..99bd4c79d 100644
--- a/app/logical/source/url/fanbox.rb
+++ b/app/logical/source/url/fanbox.rb
@@ -63,6 +63,7 @@ class Source::URL::Fanbox < Source::URL
       @username = subdomain
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/fantia.rb b/app/logical/source/url/fantia.rb
index 262b9a022..a021a8e98 100644
--- a/app/logical/source/url/fantia.rb
+++ b/app/logical/source/url/fantia.rb
@@ -65,6 +65,7 @@ class Source::URL::Fantia < Source::URL
       @username = username
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/fc2.rb b/app/logical/source/url/fc2.rb
index dbb96953b..b925276e0 100644
--- a/app/logical/source/url/fc2.rb
+++ b/app/logical/source/url/fc2.rb
@@ -67,6 +67,7 @@ class Source::URL::Fc2 < Source::URL
       @profile_url = "http://diary.fc2.com/cgi-sys/ed.cgi/#{username}"
 
     else
+      nil
     end
   end
 end
diff --git a/app/logical/source/url/foundation.rb b/app/logical/source/url/foundation.rb
index 6e4f94279..e9cbc567a 100644
--- a/app/logical/source/url/foundation.rb
+++ b/app/logical/source/url/foundation.rb
@@ -61,6 +61,7 @@ class Source::URL::Foundation < Source::URL
       @hash = hash
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/hentai_foundry.rb b/app/logical/source/url/hentai_foundry.rb
index 95f5da266..72d01e55d 100644
--- a/app/logical/source/url/hentai_foundry.rb
+++ b/app/logical/source/url/hentai_foundry.rb
@@ -60,6 +60,7 @@ class Source::URL::HentaiFoundry < Source::URL
       @username = $1
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/instagram.rb b/app/logical/source/url/instagram.rb
index 0899b438b..b28a9117d 100644
--- a/app/logical/source/url/instagram.rb
+++ b/app/logical/source/url/instagram.rb
@@ -31,6 +31,7 @@ class Source::URL::Instagram < Source::URL
       @username = username
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/lofter.rb b/app/logical/source/url/lofter.rb
index f219b7cbb..2ebcd2d61 100644
--- a/app/logical/source/url/lofter.rb
+++ b/app/logical/source/url/lofter.rb
@@ -41,6 +41,7 @@ class Source::URL::Lofter < Source::URL
       @username = $1
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/mastodon.rb b/app/logical/source/url/mastodon.rb
index 1a4a7be12..dd80c32f2 100644
--- a/app/logical/source/url/mastodon.rb
+++ b/app/logical/source/url/mastodon.rb
@@ -63,6 +63,7 @@ class Source::URL::Mastodon < Source::URL
       @media_hash = media_hash
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/moebooru.rb b/app/logical/source/url/moebooru.rb
index 6d09d598f..035fd5ff0 100644
--- a/app/logical/source/url/moebooru.rb
+++ b/app/logical/source/url/moebooru.rb
@@ -47,6 +47,7 @@ class Source::URL::Moebooru < Source::URL
       @original_file_ext = file_ext_for(sample_type)
 
     else
+      nil
     end
   end
 
@@ -75,6 +76,7 @@ class Source::URL::Moebooru < Source::URL
       work_id
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/newgrounds.rb b/app/logical/source/url/newgrounds.rb
index 32a45a324..e74669683 100644
--- a/app/logical/source/url/newgrounds.rb
+++ b/app/logical/source/url/newgrounds.rb
@@ -52,6 +52,7 @@ class Source::URL::Newgrounds < Source::URL
       @username = $1
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/nico_seiga.rb b/app/logical/source/url/nico_seiga.rb
index 43fab9f7e..60b50f4cd 100644
--- a/app/logical/source/url/nico_seiga.rb
+++ b/app/logical/source/url/nico_seiga.rb
@@ -153,6 +153,7 @@ module Source
         @profile_url = "https://game.nicovideo.jp/atsumaru/users/#{user_id}"
 
       else
+        nil
       end
     end
 
diff --git a/app/logical/source/url/nijie.rb b/app/logical/source/url/nijie.rb
index e988c5d30..41822aafb 100644
--- a/app/logical/source/url/nijie.rb
+++ b/app/logical/source/url/nijie.rb
@@ -56,6 +56,7 @@ class Source::URL::Nijie < Source::URL
       nil
 
     else
+      nil
     end
   end
 
@@ -83,6 +84,7 @@ class Source::URL::Nijie < Source::URL
       @work_id = work_id if work_id.to_i != 0
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/null.rb b/app/logical/source/url/null.rb
index f24ae16ef..fddb609c1 100644
--- a/app/logical/source/url/null.rb
+++ b/app/logical/source/url/null.rb
@@ -248,6 +248,7 @@ class Source::URL::Null < Source::URL
       @page_url = "https://www.zerochan.net/#{@work_id}#full"
 
     else
+      nil
     end
   end
 end
diff --git a/app/logical/source/url/pixiv.rb b/app/logical/source/url/pixiv.rb
index 6b04f51bd..0f059746f 100644
--- a/app/logical/source/url/pixiv.rb
+++ b/app/logical/source/url/pixiv.rb
@@ -84,6 +84,7 @@ module Source
         @username = username
 
       else
+        nil
       end
     end
 
@@ -114,6 +115,7 @@ module Source
         @work_id = work_id
 
       else
+        nil
       end
     end
 
diff --git a/app/logical/source/url/pixiv_sketch.rb b/app/logical/source/url/pixiv_sketch.rb
index 06706dd6f..b97295fc5 100644
--- a/app/logical/source/url/pixiv_sketch.rb
+++ b/app/logical/source/url/pixiv_sketch.rb
@@ -27,6 +27,7 @@ module Source
         @username = username.delete_prefix("@")
 
       else
+        nil
       end
     end
 
diff --git a/app/logical/source/url/plurk.rb b/app/logical/source/url/plurk.rb
index 0c1a5611a..dafb0ece3 100644
--- a/app/logical/source/url/plurk.rb
+++ b/app/logical/source/url/plurk.rb
@@ -45,6 +45,7 @@ class Source::URL::Plurk < Source::URL
       @username = username
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/reddit.rb b/app/logical/source/url/reddit.rb
index 32c7bccd5..d96e5ece9 100644
--- a/app/logical/source/url/reddit.rb
+++ b/app/logical/source/url/reddit.rb
@@ -52,6 +52,7 @@ module Source
           @work_id = work_id
 
         else
+          nil
         end
       end
 
diff --git a/app/logical/source/url/skeb.rb b/app/logical/source/url/skeb.rb
index dc62b5a7f..f2ecbaf0f 100644
--- a/app/logical/source/url/skeb.rb
+++ b/app/logical/source/url/skeb.rb
@@ -40,6 +40,7 @@ class Source::URL::Skeb < Source::URL
       @image_uuid = image_uuid
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/tinami.rb b/app/logical/source/url/tinami.rb
index e76fe4ec8..8fb9aa56a 100644
--- a/app/logical/source/url/tinami.rb
+++ b/app/logical/source/url/tinami.rb
@@ -50,6 +50,7 @@ class Source::URL::Tinami < Source::URL
       @work_id = work_id
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/tumblr.rb b/app/logical/source/url/tumblr.rb
index 771f15e24..36d93791e 100644
--- a/app/logical/source/url/tumblr.rb
+++ b/app/logical/source/url/tumblr.rb
@@ -69,6 +69,7 @@ class Source::URL::Tumblr < Source::URL
       @blog_name = subdomain
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/twit_pic.rb b/app/logical/source/url/twit_pic.rb
index d814be4f4..815d5acfd 100644
--- a/app/logical/source/url/twit_pic.rb
+++ b/app/logical/source/url/twit_pic.rb
@@ -68,6 +68,7 @@ class Source::URL::TwitPic < Source::URL
       @base36_id = filename.to_i.to_s(36)
 
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/twitter.rb b/app/logical/source/url/twitter.rb
index f2855fd38..1da5b62b2 100644
--- a/app/logical/source/url/twitter.rb
+++ b/app/logical/source/url/twitter.rb
@@ -85,6 +85,7 @@ class Source::URL::Twitter < Source::URL
       # /ext_tw_video_thumb/1243725361986375680/pu/img/JDA7g7lcw7wK-PIv.jpg
       @file_path = File.join(media_type, subdirs.join("/"), "#{@file}.#{@file_ext}")
     else
+      nil
     end
   end
 
diff --git a/app/logical/source/url/weibo.rb b/app/logical/source/url/weibo.rb
index 56edd7575..d05df1b60 100644
--- a/app/logical/source/url/weibo.rb
+++ b/app/logical/source/url/weibo.rb
@@ -79,6 +79,7 @@ class Source::URL::Weibo < Source::URL
       @username = username
 
     else
+      nil
     end
   end