diff --git a/config/locales/translation_en.yml b/config/locales/translation_en.yml
index ce04526..eaaef1a 100644
--- a/config/locales/translation_en.yml
+++ b/config/locales/translation_en.yml
@@ -211,7 +211,7 @@ en:
           For each config parameter, please refer to the <a href="http://docs.fluentd.org/articles/in_tail" target="_blank">Tail input plugin</a> documentation page.
       in_tail:
         notice_for_permission: "Please check permission or group setting for %{user} user can read it."
-        notice_for_multiline_limit: "The number i of lines is assigned \"format#{i}\". Lines more than 20 are ignored."
+        notice_for_multiline_limit: "Please input Regexp(s) separated by newline. blank lines are ignored. Lines more than 20 are dropped."
         restart_from_first: Restart from first
         grok_manual: |
           <p>
diff --git a/config/locales/translation_ja.yml b/config/locales/translation_ja.yml
index 6764381..9a41a0b 100644
--- a/config/locales/translation_ja.yml
+++ b/config/locales/translation_ja.yml
@@ -216,7 +216,7 @@ ja:
         <a target="_blank" href="http://docs.fluentd.org/ja/articles/in_tail">in_tailプラグインの解説ページ</a>や
         <a target="_blank" href="http://fluentular.herokuapp.com/">Fluentular</a>もご参照ください。
       in_tail:
-        notice_for_multiline_limit: "i行目が\"format#{i}\"として設定されます。20行以上は無視します。"
+        notice_for_multiline_limit: "改行区切りで正規表現を入力してください。空行はカウントされません。21行目以降の入力は無視されます。"
         notice_for_permission: "※%{user}ユーザーが読み込み可能なようにパーミッションやグループの設定をご確認ください。"
         restart_from_first: 最初からやり直す
         grok_manual: |