diff --git a/Library/Homebrew/keg.rb b/Library/Homebrew/keg.rb
index 523c027074..83ccdb3272 100644
--- a/Library/Homebrew/keg.rb
+++ b/Library/Homebrew/keg.rb
@@ -75,7 +75,7 @@ class Keg
       opt
       var/homebrew/linked
     ]
-  ).map { |dir| HOMEBREW_PREFIX/dir }.uniq.sort.freeze
+  ).map { |dir| HOMEBREW_PREFIX/dir }.sort.uniq.freeze
 
   # Keep relatively in sync with
   # https://github.com/Homebrew/install/blob/master/install
@@ -98,7 +98,7 @@ class Keg
       HOMEBREW_REPOSITORY,
       Language::Python.homebrew_site_packages,
     ]
-  ).uniq.sort.freeze
+  ).sort.uniq.freeze
 
   # These paths relative to the keg's share directory should always be real
   # directories in the prefix, never symlinks.