diff --git a/Library/Homebrew/keg.rb b/Library/Homebrew/keg.rb
index 4151895bc4..99a94facec 100644
--- a/Library/Homebrew/keg.rb
+++ b/Library/Homebrew/keg.rb
@@ -263,6 +263,7 @@ class Keg
   end
 
   def elisp_installed?
+    return false unless (path/"share/emacs/site-lisp"/name).exist?
     (path/"share/emacs/site-lisp"/name).children.any? { |f| %w[.el .elc].include? f.extname }
   end