diff --git a/Library/Homebrew/test/test_integration_cmds.rb b/Library/Homebrew/test/test_integration_cmds.rb
index a249146cf9..89b8be6d39 100644
--- a/Library/Homebrew/test/test_integration_cmds.rb
+++ b/Library/Homebrew/test/test_integration_cmds.rb
@@ -2,6 +2,7 @@ require "bundler"
 require "testing_env"
 require "fileutils"
 require "pathname"
+require "formula"
 
 class IntegrationCommandTests < Homebrew::TestCase
   def setup