diff --git a/app/views/content_items/manuals/_header.html.erb b/app/views/content_items/manuals/_header.html.erb
index a29d50bb8..8dc9687fa 100644
--- a/app/views/content_items/manuals/_header.html.erb
+++ b/app/views/content_items/manuals/_header.html.erb
@@ -32,6 +32,7 @@
       <%
         form_data = {
           module: "ga4-form-tracker",
+          ga4_form_no_answer_undefined: "",
           ga4_form_include_text: "",
           ga4_form: {
             event_name: "search",