diff --git a/Library/Homebrew/macos.rb b/Library/Homebrew/macos.rb
index 05faa04127..87034f86d3 100644
--- a/Library/Homebrew/macos.rb
+++ b/Library/Homebrew/macos.rb
@@ -1,10 +1,11 @@
+require 'macos/version'
+
 module MacOS extend self
 
   # This can be compared to numerics, strings, or symbols
   # using the standard Ruby Comparable methods.
   def version
-    require 'version'
-    MacOSVersion.new(MACOS_VERSION.to_s)
+    Version.new(MACOS_VERSION)
   end
 
   def cat
diff --git a/Library/Homebrew/macos/version.rb b/Library/Homebrew/macos/version.rb
new file mode 100644
index 0000000000..090b1ffb7d
--- /dev/null
+++ b/Library/Homebrew/macos/version.rb
@@ -0,0 +1,16 @@
+require 'version'
+
+module MacOS
+  class Version < ::Version
+    def <=>(other)
+      v = case other
+          when :mountain_lion then 10.8
+          when :lion          then 10.7
+          when :snow_leopard  then 10.6
+          when :leopard       then 10.5
+          else other.to_s
+          end
+      super(Version.new(v))
+    end
+  end
+end
diff --git a/Library/Homebrew/test/test_version_subclasses.rb b/Library/Homebrew/test/test_version_subclasses.rb
index 19ed2ba351..93711ac441 100644
--- a/Library/Homebrew/test/test_version_subclasses.rb
+++ b/Library/Homebrew/test/test_version_subclasses.rb
@@ -1,9 +1,10 @@
 require 'testing_env'
 require 'version'
+require 'macos/version'
 
 class MacOSVersionTests < Test::Unit::TestCase
   def setup
-    @v = MacOSVersion.new(10.7)
+    @v = MacOS::Version.new(10.7)
   end
 
   def test_compare_with_symbol
diff --git a/Library/Homebrew/version.rb b/Library/Homebrew/version.rb
index 07f3616820..e504843dee 100644
--- a/Library/Homebrew/version.rb
+++ b/Library/Homebrew/version.rb
@@ -208,17 +208,3 @@ class VersionSchemeDetector
     raise "Unknown version scheme #{@scheme} was requested."
   end
 end
-
-# Enable things like "MacOS.version >= :lion"
-class MacOSVersion < Version
-  def <=>(other)
-    v = case other
-        when :mountain_lion then 10.8
-        when :lion          then 10.7
-        when :snow_leopard  then 10.6
-        when :leopard       then 10.5
-        else other.to_s
-        end
-    super(Version.new(v))
-  end
-end