diff --git a/src/routes/events/[event_id]/(badges)/badges/ae_comp__badge_create_form.svelte b/src/routes/events/[event_id]/(badges)/badges/ae_comp__badge_create_form.svelte
index 128c0bec..95e335c4 100644
--- a/src/routes/events/[event_id]/(badges)/badges/ae_comp__badge_create_form.svelte
+++ b/src/routes/events/[event_id]/(badges)/badges/ae_comp__badge_create_form.svelte
@@ -118,7 +118,9 @@ async function handle_submit(event: Event) {
     try {
         const badge_data: key_val = {
             event_person_id,
-            event_badge_template_id: selected_template_id || null,
+            // selected_template_id holds the random string (IDB stores _random overwritten into _id
+            // by _process_generic_props). The backend resolves _random fields to the integer FK.
+            event_badge_template_id_random: selected_template_id || null,
             given_name,
             family_name,
             email: email || null,