diff --git a/Library/Homebrew/bottles.rb b/Library/Homebrew/bottles.rb
index ad74c67106..20d675a66c 100644
--- a/Library/Homebrew/bottles.rb
+++ b/Library/Homebrew/bottles.rb
@@ -18,7 +18,9 @@ def install_bottle? f
 end
 
 def built_bottle? f
-  Tab.for_formula(f).built_bottle
+  f = Formula.factory f unless f.kind_of? Formula
+  return false unless f.installed?
+  Tab.for_keg(f.installed_prefix).built_bottle
 end
 
 def bottle_current? f