diff --git a/lib/tasks/universal_table_tasks.rake b/lib/tasks/universal_table_tasks.rake
index b01b0de..64f7123 100644
--- a/lib/tasks/universal_table_tasks.rake
+++ b/lib/tasks/universal_table_tasks.rake
@@ -11,9 +11,9 @@ namespace :universal_table_tasks do
     url = "http://#{args.url}"
     xlsx = ac.render_to_string handlers: [:axlsx], formats: [:xlsx], template: "utable_export/export", locals: {table: table, site_in_use_locales: Site.first.in_use_locales, url: url}
     dirname = "public/uploads/utable_export/#{id}"
-    FileUtils.mkdir_p(dirname) unless File.exists?(dirname)
+    FileUtils.mkdir_p(dirname) unless File.exist?(dirname)
     f = "#{dirname}/#{table.title.gsub(/[ "'*@#$%^&()+=;:.,?>|\\\/<~_!：，、。！？；「」〈〉【】／]/,'')}.xlsx"
-    if File.exists?(f)
+    if File.exist?(f)
       File.delete(f)
     end
     file = File.open(f, "w")