diff --git a/Library/Homebrew/utils/git.rb b/Library/Homebrew/utils/git.rb
index 3abf4f9c6d..50ff200d7a 100644
--- a/Library/Homebrew/utils/git.rb
+++ b/Library/Homebrew/utils/git.rb
@@ -123,6 +123,7 @@ module Utils
     end
 
     def setup_gpg!
+      require "formula"
       return unless Formula["gnupg"].optlinked?
 
       ENV["PATH"] = PATH.new(ENV["PATH"])