2 files changed, 2 insertions, 2 deletions

diff --git a/README.ja.md b/README.ja.md
index b0ca1b3b67..bee6433c62 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -102,7 +102,7 @@ Ruby拡張モジュールについて話し合うruby-extメーリングリス�
     環境によってはデフォルトのCコンパイラ用オプションが付きます． `configure` オプションで `optflags=..`
     `warnflags=..` 等で上書きできます．
 
-3.  (必要ならば)`defines.h` を編集する
+3.  (必要ならば)`include/ruby/defines.h` を編集する
 
     多分，必要無いと思います．
 
diff --git a/README.md b/README.md
index 140f40b20b..378f48f8d7 100644
--- a/README.md
+++ b/README.md
@@ -88,7 +88,7 @@ in the mail body (not subject) to the address
     environment. Specify `optflags=..` and `warnflags=..` as necessary to
     override them.
 
-4.  Edit `defines.h` if you need. Usually this step will not be needed.
+4.  Edit `include/ruby/defines.h` if you need. Usually this step will not be needed.
 
 5.  Remove comment mark(`#`) before the module names from `ext/Setup` (or add
     module names if not present), if you want to link modules statically.