diff --git a/frontend/templates/admin_user_create.pages.tmpl b/frontend/templates/admin_user_create.pages.tmpl
index ce6324a..daa5b97 100644
--- a/frontend/templates/admin_user_create.pages.tmpl
+++ b/frontend/templates/admin_user_create.pages.tmpl
@@ -50,7 +50,7 @@
 
   <div class="field is-grouped mt-4">
     <div class="control">
-      <button class="button is-success" type="submit">✅ Créer</button>
+      <button class="button is-success" type="submit" hx-ext="json-enc">✅ Créer</button>
     </div>
     <div class="control">
       <button type="button" class="button is-light" onclick="document.getElementById('createForm').innerHTML = ''">❌ Annuler</button>