diff --git a/lib/cask/source/path_base.rb b/lib/cask/source/path_base.rb
index f0dd8126e2..e96f01bdda 100644
--- a/lib/cask/source/path_base.rb
+++ b/lib/cask/source/path_base.rb
@@ -20,7 +20,7 @@ class Cask::Source::PathBase
     raise CaskError.new "File '#{path}' is not a plain file" unless path.file?
     begin
 
-      # forward compatibility hack: convert first lines of the new form
+      # transitional hack: convert first lines of the new form
       #
       #     cask :v1 => 'google-chrome' do
       #