diff --git a/Casks/flux.rb b/Casks/f-lux.rb
similarity index 89%
rename from Casks/flux.rb
rename to Casks/f-lux.rb
index 2cabf25d6..7dd82fc0e 100644
--- a/Casks/flux.rb
+++ b/Casks/f-lux.rb
@@ -1,4 +1,4 @@
-class Flux < Cask
+class FLux < Cask
   url 'https://secure.herf.org/flux/Flux.zip'
   homepage 'http://stereopsis.com/flux/'
   version 'latest'