diff --git a/app/models/forms/bulk_upload_form/prepare_your_file.rb b/app/models/forms/bulk_upload_form/prepare_your_file.rb
index 7ef0355b5..7f6cfd759 100644
--- a/app/models/forms/bulk_upload_form/prepare_your_file.rb
+++ b/app/models/forms/bulk_upload_form/prepare_your_file.rb
@@ -40,7 +40,7 @@ module Forms
       end
 
       def slash_year_combo
-        "#{year}/#{(year + 1)%100}"
+        "#{year}/#{(year + 1) % 100}"
       end
 
       def save!