diff --git a/README.md b/README.md
index 7a7d9e5..ef2b2f4 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,7 @@ Pass `user@container1:/` to xrosfs, if you want to connect as other users.
 
 ## Known Issues
 
+* Can't access to file that had `\n` included filename.
 * Bad response time in operates.
 * Some operations methods are not full implemented yet(`flush(fsync)` `utimens` etc.).
 
diff --git a/README_ja.md b/README_ja.md
index c8ca8c5..ea792fe 100644
--- a/README_ja.md
+++ b/README_ja.md
@@ -37,6 +37,7 @@ $ xrosfs container1:/ ~/mnt
 
 ## Known Issues
 
+* 改行を含むファイル名を扱えません.
 * 動作が超絶遅いです.
 * いくつかの操作メソッドは完全には実装されていません(`flush(fsync)` `utimens` 等).