diff --git a/spec/guard/hook_spec.rb b/spec/guard/hook_spec.rb
index 997af61..358cf53 100644
--- a/spec/guard/hook_spec.rb
+++ b/spec/guard/hook_spec.rb
@@ -1,4 +1,5 @@
 require 'spec_helper'
+require 'guard/guard'
 
 describe Guard::Hook do
   subject { Guard::Hook }