diff --git a/lib/trustie/cache/clear_course_event.rb b/lib/trustie/cache/clear_course_event.rb
index a5f44bf45..cc643020d 100644
--- a/lib/trustie/cache/clear_course_event.rb
+++ b/lib/trustie/cache/clear_course_event.rb
@@ -6,6 +6,7 @@ module Trustie
       def self.included(base)
         base.class_eval{
           after_create :clear_course_events
+          after_destroy :clear_course_events
         }
       end