diff --git a/po/ja.po b/po/ja.po
index 3fa1404df..f127295cb 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -3807,7 +3807,7 @@ msgstr ""
 
 #: libraries/config/messages.inc.php:395 libraries/config/messages.inc.php:432
 msgid "Leave empty if not using config auth"
-msgstr ""
+msgstr "config認証を使用しない場合は空欄のまま"
 
 #: libraries/config/messages.inc.php:396
 msgid "Password for config auth"