diff --git a/Library/Homebrew/cask/artifact/moved.rb b/Library/Homebrew/cask/artifact/moved.rb
index ee878de0a5..429a0945a8 100644
--- a/Library/Homebrew/cask/artifact/moved.rb
+++ b/Library/Homebrew/cask/artifact/moved.rb
@@ -95,7 +95,7 @@ module Cask
             source.children.each { |child| FileUtils.move(child, target + child.basename) }
           else
             source.children.each do |child|
-              command.run!("/bin/cp", args: ["-pR", child, target + child.basename],
+              command.run!("/bin/cp", args: ["-pR", child, target/child.basename],
                                       sudo: true)
             end
           end