diff --git a/Casks/adium-nightly15.rb b/Casks/adium-nightly15.rb
deleted file mode 100644
index 6982a7d4e..000000000
--- a/Casks/adium-nightly15.rb
+++ /dev/null
@@ -1,17 +0,0 @@
-cask 'adium-nightly15' do
-  version '1.5.11b2r5922'
-  sha256 '828c2e2f21a2e500aeb580d018afba0f360956334d655a8280d4f9ba09af7b9d'
-
-  url "http://nightly.adium.im/adium-adium-1.5.11/Adium_#{version}.dmg"
-  name 'Adium'
-  homepage 'http://nightly.adium.im/?repo_branch=adium-adium-1.5.11'
-  license :gpl
-
-  app 'Adium.app'
-
-  zap :delete => [
-                  '~/Library/Caches/Adium',
-                  '~/Library/Caches/com.adiumX.adiumX',
-                  '~/Library/Preferences/com.adiumX.adiumX.plist',
-                 ]
-end