diff --git a/app/workers/score_calculator_worker.rb b/app/workers/score_calculator_worker.rb
index 82977994b41f78996c7efc58f684a9f8fd5f1147..5a0e9b820fd7f907d2337a7af81a4f780166b84c 100644
--- a/app/workers/score_calculator_worker.rb
+++ b/app/workers/score_calculator_worker.rb
@@ -3,7 +3,7 @@ class ScoreCalculatorWorker
   sidekiq_options queue: :score
 
   def perform(id, object_class)
-    return false unless %w(User LearningObject Collection)
+    return false unless %w(User LearningObject Collection).include? object_class
 
     object = object_class.constantize.find(id)