diff --git a/app/views/auth/sessions/two_factor/_otp_authentication_form.html.haml b/app/views/auth/sessions/two_factor/_otp_authentication_form.html.haml
index 6062d33a1b..9f4b01a613 100644
--- a/app/views/auth/sessions/two_factor/_otp_authentication_form.html.haml
+++ b/app/views/auth/sessions/two_factor/_otp_authentication_form.html.haml
@@ -1,7 +1,7 @@
 = simple_form_for(resource,
                   as: resource_name,
                   url: session_path(resource_name),
-                  html: { method: :post, id: 'otp-authentication-form' }.merge(hidden ? { class: 'hidden' } : {})) do |f|
+                  html: { method: :post, id: 'otp-authentication-form', class: [hidden:] }) do |f|
   %p.hint.authentication-hint= t('simple_form.hints.sessions.otp')
 
   .fields-group
diff --git a/app/views/auth/sessions/two_factor/_webauthn_form.html.haml b/app/views/auth/sessions/two_factor/_webauthn_form.html.haml
index 32ed1294aa..abddf9db84 100644
--- a/app/views/auth/sessions/two_factor/_webauthn_form.html.haml
+++ b/app/views/auth/sessions/two_factor/_webauthn_form.html.haml
@@ -5,7 +5,7 @@
 = simple_form_for(resource,
                   as: resource_name,
                   url: session_path(resource_name),
-                  html: { method: :post, id: 'webauthn-form' }.merge(hidden ? { class: 'hidden' } : {})) do |f|
+                  html: { method: :post, id: 'webauthn-form', class: [hidden:] }) do |f|
   %h3.title= t('simple_form.title.sessions.webauthn')
   %p.hint= t('simple_form.hints.sessions.webauthn')