diff --git a/spec/models/form_spec.rb b/spec/models/form_spec.rb
index 2277b52f7..08cd1718e 100644
--- a/spec/models/form_spec.rb
+++ b/spec/models/form_spec.rb
@@ -191,12 +191,16 @@ RSpec.describe Form, type: :model do
       end
     end
 
-    context "when a page is marked as `derived`" do
+    context "when a page is marked as `derived` and `depends_on: false`" do
       let(:case_log) { FactoryBot.build(:case_log, :in_progress, startdate: Time.utc(2023, 2, 2, 10, 36, 49)) }
 
       it "does not count it's questions as invalidated" do
         expect(form.enabled_page_questions(case_log).map(&:id).uniq).to include("tshortfall_known")
       end
+
+      it "does not route to the page" do
+        expect(form.invalidated_pages(case_log).map(&:id)).to include("outstanding_amount_known")
+      end
     end
   end
 end