diff --git a/app/jobs/marc_export_job.rb b/app/jobs/marc_export_job.rb
index 5700bacc..cabbb300 100644
--- a/app/jobs/marc_export_job.rb
+++ b/app/jobs/marc_export_job.rb
@@ -8,7 +8,7 @@ def perform(theses)
       zip_file = MarcBatch.new(theses, marc_filename, zip_filename).build
       BatchMailer.marc_batch_email(zip_filename, zip_file, theses).deliver_now
     ensure
-      zip_file.close
+      zip_file.close if zip_file
     end
   end