diff --git a/app/models/validations/household_validations.rb b/app/models/validations/household_validations.rb
index 5d0f52037..34f5f5862 100644
--- a/app/models/validations/household_validations.rb
+++ b/app/models/validations/household_validations.rb
@@ -18,7 +18,7 @@ module Validations::HouseholdValidations
       record.errors.add :underoccupation_benefitcap, I18n.t("validations.household.underoccupation_benefitcap.dont_know_required")
       record.errors.add :reason, I18n.t("validations.household.underoccupation_benefitcap.dont_know_required")
     end
-    validate_other_field(record, 31, :reason, :reasonother)
+    validate_other_field(record, 20, :reason, :reasonother)
 
     if record.is_reason_permanently_decanted? && record.referral.present? && !record.is_internal_transfer?
       record.errors.add :referral, I18n.t("validations.household.referral.reason_permanently_decanted")
diff --git a/spec/models/validations/household_validations_spec.rb b/spec/models/validations/household_validations_spec.rb
index 6fdf72dc9..8d33a44f4 100644
--- a/spec/models/validations/household_validations_spec.rb
+++ b/spec/models/validations/household_validations_spec.rb
@@ -120,7 +120,7 @@ RSpec.describe Validations::HouseholdValidations do
       let(:field) { "validations.other_field_missing" }
 
       it "validates that a reason is provided" do
-        record.reason = 31
+        record.reason = 20
         record.reasonother = nil
         household_validator.validate_reason_for_leaving_last_settled_home(record)
         expect(record.errors["reasonother"])
@@ -128,7 +128,7 @@ RSpec.describe Validations::HouseholdValidations do
       end
 
       it "expects that a reason is provided" do
-        record.reason = 31
+        record.reason = 20
         record.reasonother = "Some unusual reason"
         household_validator.validate_reason_for_leaving_last_settled_home(record)
         expect(record.errors["reasonother"]).to be_empty