diff --git a/app/services/csv/lettings_log_csv_service.rb b/app/services/csv/lettings_log_csv_service.rb
index ea9069f52..882969169 100644
--- a/app/services/csv/lettings_log_csv_service.rb
+++ b/app/services/csv/lettings_log_csv_service.rb
@@ -245,11 +245,11 @@ module Csv
     }.freeze
 
     LABELS = {
-      "lettype": LETTYPE_LABELS,
-      "irproduct": IRPRODUCT_LABELS,
-      "lar": LAR_LABELS,
-      "newprop": NEWPROP_LABELS,
-      "incref": INCREF_LABELS,
+      "lettype" => LETTYPE_LABELS,
+      "irproduct" => IRPRODUCT_LABELS,
+      "lar" => LAR_LABELS,
+      "newprop" => NEWPROP_LABELS,
+      "incref" => INCREF_LABELS,
     }.freeze
 
     CONVENTIONAL_YES_NO_ATTRIBUTES = %w[illness_type_1 illness_type_2 illness_type_3 illness_type_4 illness_type_5 illness_type_6 illness_type_7 illness_type_8 illness_type_9 illness_type_10 refused cbl cap chr letting_allocation_none housingneeds_a housingneeds_b housingneeds_c housingneeds_d housingneeds_e housingneeds_f housingneeds_g housingneeds_h has_benefits nocharge].freeze