diff --git a/app/models/derived_variables/sales_log_variables.rb b/app/models/derived_variables/sales_log_variables.rb
index 10e41a8c8..81ad177e4 100644
--- a/app/models/derived_variables/sales_log_variables.rb
+++ b/app/models/derived_variables/sales_log_variables.rb
@@ -68,6 +68,7 @@ module DerivedVariables::SalesLogVariables
       if manual_address_entry_selected
         self.uprn_known = 0
         self.uprn_selection = nil
+        self.uprn_confirmed = nil
       else
         self.uprn_confirmed = 1 if uprn.present?
         self.uprn_known = 1 if uprn.present?
diff --git a/spec/factories/sales_log.rb b/spec/factories/sales_log.rb
index 96cefc981..375457c21 100644
--- a/spec/factories/sales_log.rb
+++ b/spec/factories/sales_log.rb
@@ -175,7 +175,7 @@ FactoryBot.define do
           log.nationality_all_group = 826
           log.nationality_all_buyer2_group = 826
           log.uprn = evaluator.uprn || "10033558653"
-          log.uprn_selection = evaluator.uprn_selection || "1"
+          log.uprn_selection = evaluator.uprn_selection || "10033558653"
         end
         if log.saledate >= Time.zone.local(2025, 4, 1)
           log.relat2 = "X" if log.relat2 == "C"