diff --git a/app/controllers/content_items_controller.rb b/app/controllers/content_items_controller.rb
index 330bfa7b7..136d11237 100644
--- a/app/controllers/content_items_controller.rb
+++ b/app/controllers/content_items_controller.rb
@@ -225,6 +225,8 @@ def save_this_page_enabled?
   helper_method :logged_in?
 
   def user_has_saved_page?
+    return false unless @account_session_header
+
     GdsApi.account_api.get_saved_page(
       page_path: request.path,
       govuk_account_session: @account_session_header,
diff --git a/test/controllers/save_a_page_test.rb b/test/controllers/save_a_page_test.rb
index cd2c48cee..280279d42 100644
--- a/test/controllers/save_a_page_test.rb
+++ b/test/controllers/save_a_page_test.rb
@@ -16,6 +16,13 @@ class ContentItemsControllerTest < ActionController::TestCase
   end
 
   test "logged out - shows the add_page_button when the feature flag is on" do
+    stub_feature_flag_on
+    set_up_and_visit_content_item("detailed_guide", "detailed_guide")
+
+    assert has_save_page_button("/guidance/salary-sacrifice-and-the-effects-on-paye")
+  end
+
+  test "invalid session - shows the add_page_button when the feature flag is on" do
     stub_feature_flag_on
     stub_account_api_unauthorized_get_saved_page(page_path: "/guidance/salary-sacrifice-and-the-effects-on-paye")
     set_up_and_visit_content_item("detailed_guide", "detailed_guide")