diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index a2e03bd..b36f7d5 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -45,6 +45,7 @@ if RAILS_VER >= '2.1'
 end
 
 require 'validates_timeliness'
+require 'validates_timeliness/matcher'
 
 ValidatesTimeliness.enable_datetime_select_extension!