diff --git a/backend/lib/tasks/export_nico.rake b/backend/lib/tasks/export_nico.rake
index c0c6c9f..9cb1f22 100644
--- a/backend/lib/tasks/export_nico.rake
+++ b/backend/lib/tasks/export_nico.rake
@@ -3,8 +3,8 @@ namespace :nico do
   task export: :environment do
     require 'open3'
 
-    mysql_user = ENV.fetch('MYSQL_USER')
-    mysql_pass = ENV.fetch('MYSQL_PASS')
+    mysql_user = ENV.fetch('NIZIKA_NICO_MYSQL_USER')
+    mysql_pass = ENV.fetch('NIZIKA_NICO_MYSQL_PASS')
     nizika_nico_path = ENV.fetch('NIZIKA_NICO_PATH')
 
     videos = Post.where('url LIKE ?', '%nicovideo.jp/watch/%').pluck(:url).filter_map {