diff --git a/Casks/key-remap-4-mac-book.rb b/Casks/keyremap4macbook.rb
similarity index 88%
rename from Casks/key-remap-4-mac-book.rb
rename to Casks/keyremap4macbook.rb
index 92f0f0f7c..2bdd90d2e 100644
--- a/Casks/key-remap-4-mac-book.rb
+++ b/Casks/keyremap4macbook.rb
@@ -1,4 +1,4 @@
-class KeyRemap4MacBook < Cask
+class Keyremap4macbook < Cask
   url 'https://pqrs.org/macosx/keyremap4macbook/files/KeyRemap4MacBook-8.3.0.dmg'
   homepage 'https://pqrs.org/macosx/keyremap4macbook/'
   version '8.3.0'