diff --git a/README.md b/README.md
index deec2d7..6c5d333 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,6 @@
 # minetest-mod-doas
 Mod that provides execution commands as other player
+### Usage
+* `/doas <playername> <command> [params]`
+* This command requires `doas` privilege, which granged automatically to singleplayer or host account
+* Warning! `doas` is bypassing privileges(except grant,revoke), e.g. `/doas UnprivilegedSam giveme adminpick` will work(if player online).