diff --git a/app/models/form/sales/questions/mortgage_amount.rb b/app/models/form/sales/questions/mortgage_amount.rb
index 5ad85bd31..bd4ae5e60 100644
--- a/app/models/form/sales/questions/mortgage_amount.rb
+++ b/app/models/form/sales/questions/mortgage_amount.rb
@@ -8,5 +8,6 @@ class Form::Sales::Questions::MortgageAmount < ::Form::Question
     @min = 0
     @width = 5
     @prefix = "£"
+    @hint_text = "Enter the amount of mortgage agreed with the mortgage lender. Exclude any deposits or cash payments. Numeric in pounds. Rounded to the nearest pound."
   end
 end
diff --git a/spec/models/form/sales/questions/mortgage_amount_spec.rb b/spec/models/form/sales/questions/mortgage_amount_spec.rb
index eadec2876..832b47d37 100644
--- a/spec/models/form/sales/questions/mortgage_amount_spec.rb
+++ b/spec/models/form/sales/questions/mortgage_amount_spec.rb
@@ -32,7 +32,7 @@ RSpec.describe Form::Sales::Questions::MortgageAmount, type: :model do
   end
 
   it "has the correct hint" do
-    expect(question.hint_text).to be_nil
+    expect(question.hint_text).to eq("Enter the amount of mortgage agreed with the mortgage lender. Exclude any deposits or cash payments. Numeric in pounds. Rounded to the nearest pound.")
   end
 
   it "has correct width" do