diff --git a/app/services/csv/lettings_log_csv_service.rb b/app/services/csv/lettings_log_csv_service.rb
index 2ab0fb693..997e97b8e 100644
--- a/app/services/csv/lettings_log_csv_service.rb
+++ b/app/services/csv/lettings_log_csv_service.rb
@@ -203,7 +203,7 @@ module Csv
 
     def conventional_yes_no_label(value)
       return "Yes" if value == 1
-      return "No" if value == 0
+      return "No" if value&.zero?
     end
 
     def yes_or_blank_label(value)