diff --git a/app/models/case_log.rb b/app/models/case_log.rb
index 39519b645..6853370aa 100644
--- a/app/models/case_log.rb
+++ b/app/models/case_log.rb
@@ -219,6 +219,10 @@ class CaseLog < ApplicationRecord
     rent_type == 2 || rent_type == 4
   end
 
+  def previous_tenancy_was_foster_care?
+    prevten == 13
+  end
+
 private
 
   PIO = Postcodes::IO.new
diff --git a/app/models/validations/household_validations.rb b/app/models/validations/household_validations.rb
index a036eb70f..5d6e73751 100644
--- a/app/models/validations/household_validations.rb
+++ b/app/models/validations/household_validations.rb
@@ -65,7 +65,7 @@ module Validations::HouseholdValidations
       record.errors.add :prevten, I18n.t("validations.household.prevten.non_temp_accommodation")
     end
 
-    if record.age1.present? && record.age1 > 19 && record.prevten == 13
+    if record.age1.present? && record.age1 > 19 && record.previous_tenancy_was_foster_care?
       record.errors.add :prevten, I18n.t("validations.household.prevten.over_20_foster_care")
       record.errors.add :age1, I18n.t("validations.household.age.lead.over_20")
     end
diff --git a/spec/models/validations/household_validations_spec.rb b/spec/models/validations/household_validations_spec.rb
index dcd52e44c..b07e6adbb 100644
--- a/spec/models/validations/household_validations_spec.rb
+++ b/spec/models/validations/household_validations_spec.rb
@@ -570,7 +570,7 @@ RSpec.describe Validations::HouseholdValidations do
         expect(record.errors["prevten"])
           .to include(match I18n.t("validations.household.prevten.over_20_foster_care"))
         expect(record.errors["age1"])
-        .to include(match I18n.t("validations.household.age.lead.over_20"))
+          .to include(match I18n.t("validations.household.age.lead.over_20"))
       end
     end
 
@@ -582,7 +582,7 @@ RSpec.describe Validations::HouseholdValidations do
         expect(record.errors["prevten"])
           .to include(match I18n.t("validations.household.prevten.male_refuge"))
         expect(record.errors["sex1"])
-        .to include(match I18n.t("validations.household.gender.male_refuge"))
+          .to include(match I18n.t("validations.household.gender.male_refuge"))
       end
     end
 
@@ -594,7 +594,7 @@ RSpec.describe Validations::HouseholdValidations do
         expect(record.errors["prevten"])
           .to include(match I18n.t("validations.household.prevten.internal_transfer", prevten: ""))
         expect(record.errors["referral"])
-        .to include(match I18n.t("validations.household.referral.prevten_invalid", prevten: ""))
+          .to include(match I18n.t("validations.household.referral.prevten_invalid", prevten: ""))
       end
 
       it "cannot be 4, 10, 13, 19, 23, 24, 25, 26, 28, 29" do
@@ -602,9 +602,9 @@ RSpec.describe Validations::HouseholdValidations do
         record.prevten = 4
         household_validator.validate_previous_housing_situation(record)
         expect(record.errors["prevten"])
-        .to include(match I18n.t("validations.household.prevten.internal_transfer", prevten: ""))
+          .to include(match I18n.t("validations.household.prevten.internal_transfer", prevten: ""))
         expect(record.errors["referral"])
-        .to include(match I18n.t("validations.household.referral.prevten_invalid", prevten: ""))
+          .to include(match I18n.t("validations.household.referral.prevten_invalid", prevten: ""))
       end
     end
   end