diff --git a/Library/Homebrew/extend/ENV/super.rb b/Library/Homebrew/extend/ENV/super.rb
index 01ec3d0844..c2c44c3bfa 100644
--- a/Library/Homebrew/extend/ENV/super.rb
+++ b/Library/Homebrew/extend/ENV/super.rb
@@ -119,10 +119,14 @@ module Superenv
 
   def determine_path
     paths = [Superenv.bin]
-    if MacOS::Xcode.without_clt?
+
+    # On 10.9, there are shims for all tools in /usr/bin.
+    # On 10.7 and 10.8 we need to add these directories ourselves.
+    if MacOS::Xcode.without_clt? && MacOS.version <= "10.8"
       paths << "#{MacOS::Xcode.prefix}/usr/bin"
       paths << "#{MacOS::Xcode.toolchain_path}/usr/bin"
     end
+
     paths += deps.map{|dep| "#{HOMEBREW_PREFIX}/opt/#{dep}/bin" }
     paths << MacOS::X11.bin if x11?
     paths += %w{/usr/bin /bin /usr/sbin /sbin}