diff --git a/Library/Homebrew/os/mac/mach.rb b/Library/Homebrew/os/mac/mach.rb
index 44c5ee50ad..4113a06018 100644
--- a/Library/Homebrew/os/mac/mach.rb
+++ b/Library/Homebrew/os/mac/mach.rb
@@ -1,7 +1,7 @@
 require "vendor/macho/macho"
 require "os/mac/architecture_list"
 
-module MachO
+module MachOShim
   # @private
   def macho
     @macho ||= begin
diff --git a/Library/Homebrew/os/mac/pathname.rb b/Library/Homebrew/os/mac/pathname.rb
index 9b65d7ac02..5fd59e1e79 100644
--- a/Library/Homebrew/os/mac/pathname.rb
+++ b/Library/Homebrew/os/mac/pathname.rb
@@ -1,5 +1,5 @@
 require "os/mac/mach"
 
 class Pathname
-  include MachO
+  include MachOShim
 end