diff --git a/app/views/subscriptions/_create.html.haml b/app/views/subscriptions/_create.html.haml
index d35861aa..64d289a9 100644
--- a/app/views/subscriptions/_create.html.haml
+++ b/app/views/subscriptions/_create.html.haml
@@ -1,3 +1,3 @@
-= button_to subscriptions_path(answer: answer.id), class: "dropdown-item", id: "subscription-#{answer.id}" do
+= button_to subscriptions_path(answer: answer.id), class: "dropdown-item", form: { id: "subscription-#{answer.id}" } do
   %i.fa.fa-fw.fa-bell
   = t("voc.subscribe")
diff --git a/app/views/subscriptions/_destroy.html.haml b/app/views/subscriptions/_destroy.html.haml
index 89f57ede..31e6d967 100644
--- a/app/views/subscriptions/_destroy.html.haml
+++ b/app/views/subscriptions/_destroy.html.haml
@@ -1,3 +1,3 @@
-= button_to subscriptions_path(answer: answer.id), method: :delete, class: "dropdown-item", id: "subscription-#{answer.id}" do
+= button_to subscriptions_path(answer: answer.id), method: :delete, class: "dropdown-item", form: { id: "subscription-#{answer.id}" } do
   %i.fa.fa-fw.fa-bell-slash
   = t("voc.unsubscribe")