diff --git a/gestioncof/templates/calendar_subscription.html b/gestioncof/templates/calendar_subscription.html
index 52f6d492..5f0bc988 100644
--- a/gestioncof/templates/calendar_subscription.html
+++ b/gestioncof/templates/calendar_subscription.html
@@ -37,7 +37,7 @@ souscrire aux événements du COF et/ou aux spectacles BdA.
 <form action="" method="post">
 {% csrf_token %}
 {{ form.as_p }}
-<input type="submit" value="Enregistrer" />
+<input type="submit" value="Enregistrer" class="btn btn-primary" />
 </form>
 
 {% endblock %}