diff --git a/Library/Homebrew/dev-cmd/audit.rb b/Library/Homebrew/dev-cmd/audit.rb
index fc6e85baa8..746a6d7fad 100644
--- a/Library/Homebrew/dev-cmd/audit.rb
+++ b/Library/Homebrew/dev-cmd/audit.rb
@@ -129,7 +129,7 @@ module Homebrew
       end
     elsif args.installed?
       no_named_args = true
-      [Formula.installed, Cask::Cask.casks]
+      [Formula.installed, Cask::Caskroom.casks]
     elsif args.no_named?
       no_named_args = true
       [Formula.all, Cask::Cask.all]