diff --git a/Library/Homebrew/os/mac.rb b/Library/Homebrew/os/mac.rb
index f1e3b2a2e5e05850b3b60316b9607d6ee7f57dad..ff7fd0c0a19192a0c537de7c28e38f7f73e94ff5 100644
--- a/Library/Homebrew/os/mac.rb
+++ b/Library/Homebrew/os/mac.rb
@@ -58,13 +58,10 @@ module OS
       @dev_tools_path ||= if tools_in_prefix? CLT::MAVERICKS_PKG_PATH
         Pathname.new "#{CLT::MAVERICKS_PKG_PATH}/usr/bin"
       elsif tools_in_prefix? "/"
-        # probably a safe enough assumption (the unix way)
         Pathname.new "/usr/bin"
       elsif not (make_path = `/usr/bin/xcrun -find make 2>/dev/null`).empty?
-        # Note that the exit status of system "xcrun foo" isn't always accurate
         Pathname.new(make_path.chomp).dirname
       elsif File.exist? "#{Xcode.prefix}/usr/bin/make"
-        # cc stopped existing with Xcode 4.3, there are c89 and c99 options though
         Pathname.new "#{Xcode.prefix}/usr/bin"
       end
     end