diff --git a/ja-jp/php.html.markdown b/ja-jp/php-jp.html.markdown
similarity index 99%
rename from ja-jp/php.html.markdown
rename to ja-jp/php-jp.html.markdown
index b07dfb2f..2ca17179 100644
--- a/ja-jp/php.html.markdown
+++ b/ja-jp/php-jp.html.markdown
@@ -6,6 +6,7 @@ contributors:
 translators:
     - ["Kazushige Tominaga", "https://github.com/kazu9su"]
 filename: learnphp.php
+lang: ja-jp
 ---
 
 このドキュメントでは、 PHP 5+ について説明します。