diff --git a/po/ja.po b/po/ja.po
index 4f91aaf333..ce7f725398 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -4301,7 +4301,7 @@ msgstr "クッキー認証"
 
 #: libraries/config/setup.forms.php:48
 msgid "HTTP authentication"
-msgstr ""
+msgstr "HTTP認証"
 
 #: libraries/config/setup.forms.php:51
 msgid "Signon authentication"