diff --git a/app/services/csv/lettings_log_csv_service.rb b/app/services/csv/lettings_log_csv_service.rb
index 601d27365..003515ac9 100644
--- a/app/services/csv/lettings_log_csv_service.rb
+++ b/app/services/csv/lettings_log_csv_service.rb
@@ -138,6 +138,7 @@ module Csv
       (2..8).each do |i|
         hash["age#{i}"] = { "refused_code" => "-9", "refused_label" => "Not known", "details_known_field" => "details_known_#{i}", "age_known_field" => "age#{i}_known" }
         hash["sexrab#{i}"] = { "refused_code" => "R", "refused_label" => "Prefers not to say", "details_known_field" => "details_known_#{i}" }
+        hash["gender_same_as_sex#{i}"] = { "refused_code" => "3", "refused_label" => "Prefers not to say", "details_known_field" => "details_known_#{i}" }
         hash["sex#{i}"] = { "refused_code" => "R", "refused_label" => "Prefers not to say", "details_known_field" => "details_known_#{i}" }
         hash["relat#{i}"] = { "refused_code" => "R", "refused_label" => "Prefers not to say", "details_known_field" => "details_known_#{i}" }
         hash["ecstat#{i}"] = { "refused_code" => "10", "refused_label" => "Prefers not to say", "details_known_field" => "details_known_#{i}" }