diff --git a/doc/ja/weechat_user.ja.adoc b/doc/ja/weechat_user.ja.adoc
index 5e4be60aa..876885c9e 100644
--- a/doc/ja/weechat_user.ja.adoc
+++ b/doc/ja/weechat_user.ja.adoc
@@ -2511,8 +2511,7 @@ TOR プロキシを設定:
 /set irc.server.freenode-tor.proxy "tor"
 ----
 
-// TRANSLATION MISSING
-Set SASL authentication with ECDSA-NIST256P-CHALLENGE:
+ECDSA-NIST256P-CHALLENGE メカニズムで SASL 認証を設定:
 
 ----
 /set irc.server.freenode-tor.sasl_mechanism ecdsa-nist256p-challenge
diff --git a/po/ja.po b/po/ja.po
index d50b7f5a2..d33c14faf 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -21,7 +21,7 @@ msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
 "POT-Creation-Date: 2017-02-03 21:58+0100\n"
-"PO-Revision-Date: 2017-01-29 09:00+0900\n"
+"PO-Revision-Date: 2017-02-18 09:00+0900\n"
 "Last-Translator: AYANOKOUZI, Ryuunosuke <i38w7i3@yahoo.co.jp>\n"
 "Language-Team: Japanese <https://github.com/l/weechat/tree/master/"
 "translation/ja_JP>\n"
@@ -981,9 +981,9 @@ msgstr ""
 msgid "compiled on"
 msgstr "コンパイル日時"
 
-#, fuzzy, c-format
+#, c-format
 msgid "Upgraded %d %s, first start: %s, last start: %s"
-msgstr "アップグレード回数 %d %s、初回起動日時: %s"
+msgstr "アップグレード回数 %d %s、初回起動日時: %s、最終起動日時: %s"
 
 #. TRANSLATORS: text is: "upgraded xx times"
 msgid "time"