diff --git a/Library/Homebrew/test/formulary_test.rb b/Library/Homebrew/test/formulary_test.rb
index 3d88c840775bd0d7c7a1c20d99b92d9b8698c2f9..a306c43df996b730bab4b07355d0da19e9ce5188 100644
--- a/Library/Homebrew/test/formulary_test.rb
+++ b/Library/Homebrew/test/formulary_test.rb
@@ -110,6 +110,7 @@ class FormularyFactoryTest < Homebrew::TestCase
     keg.uninstall
     formula.clear_cache
     formula.bottle.clear_cache
+    Tab.clear_cache
   end
 
   def test_load_from_contents