diff --git a/po/ja.po b/po/ja.po
index b2330ef71..4f91aaf33 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -4297,7 +4297,7 @@ msgstr "Config認証"
 
 #: libraries/config/setup.forms.php:45
 msgid "Cookie authentication"
-msgstr ""
+msgstr "クッキー認証"
 
 #: libraries/config/setup.forms.php:48
 msgid "HTTP authentication"