diff --git a/app/views/france_connect/particulier/merge.html.haml b/app/views/france_connect/particulier/merge.html.haml
index aeb4ec2bb..a32ee84c9 100644
--- a/app/views/france_connect/particulier/merge.html.haml
+++ b/app/views/france_connect/particulier/merge.html.haml
@@ -22,15 +22,15 @@
     = form_tag france_connect_particulier_merge_with_existing_account_path, data: { turbo: true }, class: 'mt-2 form fconnect-form' do
       = hidden_field_tag :merge_token, @fci.merge_token, id: dom_id(@fci, :fusion_merge_token)
       = hidden_field_tag :email, @fci.email_france_connect, id: dom_id(@fci, :fusion_email)
-
-      = label_tag :password, t('views.registrations.new.password_label', min_length: 8)
-      = password_field_tag :password, nil, autocomplete: 'current-password', class: 'mb-1'
+      .fr-input-group
+        = label_tag :password, t('views.registrations.new.password_label', min_length: 8), class: 'fr-label'
+        = password_field_tag :password, nil, autocomplete: 'current-password', class: 'mb-1 fr-input'
       .mb-2
         = t('views.users.sessions.new.reset_password')
         = link_to france_connect_particulier_resend_and_renew_merge_confirmation_path(merge_token: @fci.merge_token), method: :post do
           = t('.link_confirm_by_email')
 
-      = submit_tag t('.button_merge'), class: 'button primary'
+      = submit_tag t('.button_merge'), class: 'fr-btn'
 
 
   .new-account.hidden