diff --git a/Library/Homebrew/cmd/doctor.rb b/Library/Homebrew/cmd/doctor.rb
index 47ad62027b..a9624397e6 100644
--- a/Library/Homebrew/cmd/doctor.rb
+++ b/Library/Homebrew/cmd/doctor.rb
@@ -191,7 +191,9 @@ def check_for_broken_symlinks
 end
 
 def check_xcode_clt
-  if MacOS::Xcode.installed?
+  if MacOS.version >= :mavericks
+    __check_clt_up_to_date
+  elsif MacOS::Xcode.installed?
     __check_xcode_up_to_date
   elsif MacOS.version >= :lion
     __check_clt_up_to_date