diff --git a/Library/Homebrew/cask/lib/hbc/cli/cleanup.rb b/Library/Homebrew/cask/lib/hbc/cli/cleanup.rb
index 356162db55..07ac71cd6b 100644
--- a/Library/Homebrew/cask/lib/hbc/cli/cleanup.rb
+++ b/Library/Homebrew/cask/lib/hbc/cli/cleanup.rb
@@ -79,9 +79,8 @@ module Hbc
           begin
             LockFile.new(item.basename).with_lock do
               puts item
-              item_size = File.size?(item)
-              cleanup_size += item_size unless item_size.nil?
-              item.unlink
+              cleanup_size += File.size(item)
+              item.rmtree
             end
           rescue OperationInProgressError
             puts "skipping: #{item} is locked"