1 files changed, 5 insertions, 3 deletions
diff --git a/app/helpers/application_settings_helper.rb b/app/helpers/application_settings_helper.rb
index 684c84c3006..52ccd9a106d 100644
--- a/app/helpers/application_settings_helper.rb
+++ b/app/helpers/application_settings_helper.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ApplicationSettingsHelper
   extend self
 
@@ -73,12 +75,12 @@ module ApplicationSettingsHelper
   def oauth_providers_checkboxes
     button_based_providers.map do |source|
       disabled = Gitlab::CurrentSettings.disabled_oauth_sign_in_sources.include?(source.to_s)
-      css_class = 'btn'
-      css_class << ' active' unless disabled
+      css_class = ['btn']
+      css_class << 'active' unless disabled
       checkbox_name = 'application_setting[enabled_oauth_sign_in_sources][]'
       name = Gitlab::Auth::OAuth::Provider.label_for(source)
 
-      label_tag(checkbox_name, class: css_class) do
+      label_tag(checkbox_name, class: css_class.join(' ')) do
         check_box_tag(checkbox_name, source, !disabled,
                       autocomplete: 'off',
                       id: name.tr(' ', '_')) + name