diff --git a/Library/Homebrew/cmd/tap.rb b/Library/Homebrew/cmd/tap.rb
index 5c1ff089cc..60e789557e 100644
--- a/Library/Homebrew/cmd/tap.rb
+++ b/Library/Homebrew/cmd/tap.rb
@@ -14,7 +14,7 @@ module Homebrew
     elsif ARGV.first == "--list-pinned"
       puts Tap.select(&:pinned?).map(&:name)
     else
-      tap = Tap.fetch(ARGV.named[0])
+      tap = Tap.fetch(ARGV[0])
       begin
         tap.install(:clone_target => ARGV.named[1],
                     :full_clone   => ARGV.include?("--full"))