diff --git a/README.md b/README.md
index 05e9e7a..8dee25d 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,8 @@ Second, config folder is now ${HOME}/.telegram-cli
 
 Third, database is not compatible with older versions, so you'll have to login again.
 
+Fourth, in peer_name '#' are substitued to '@'. (Not applied to appending of '#%d' in case of two peers having same name).
+
 ### Installation
 
 Clone GitHub Repository