diff --git a/Library/Homebrew/cmd/uninstall.rb b/Library/Homebrew/cmd/uninstall.rb
index d4a64c5055..d9e6a73778 100644
--- a/Library/Homebrew/cmd/uninstall.rb
+++ b/Library/Homebrew/cmd/uninstall.rb
@@ -21,6 +21,7 @@ module Homebrew
     kegs_by_rack = if ARGV.force?
       Hash[ARGV.named.map do |name|
         rack = Formulary.to_rack(name)
+        next unless rack.directory?
         [rack, rack.subdirs.map { |d| Keg.new(d) }]
       end]
     else