diff --git a/lib/sso_login_box/login_tag.rb b/lib/sso_login_box/login_tag.rb
index 2a130fb..be35f5a 100644
--- a/lib/sso_login_box/login_tag.rb
+++ b/lib/sso_login_box/login_tag.rb
@@ -2,6 +2,6 @@ module SsoLoginBox::LoginTag
   def self.show
     url_for_sso = File.read("#{ENV['PWD']}/sso_url.txt").force_encoding('utf-8').gsub(/\n/,'')
     "<div style=\"text-align: right;\" class=\"pull-right\">
-      <a style=\"border: 0.1em solid;padding: 0.5em;\" href=\"#{url_for_sso}\">#{t('nccu_lib_login')}</a></div>"
+      <a style=\"border: 0.1em solid;padding: 0.5em;\" href=\"#{url_for_sso}\">#{I18n.t('nccu_lib_login')}</a></div>"
   end
 end