diff --git a/README.md b/README.md
index 33608bf..5963992 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # indentmini.nvim
 A minimal less than ~100 lines and blazing fast indentline plugin. no much more features but useful!
+**NOTE:** it only works on current buffer that's mean you can't see any indent char
+on non current buffer.
 
 ![old](https://github.com/nvimdev/indentmini.nvim/assets/41671631/d836db79-4c41-45bc-99cb-d9f807dfe9af)