diff --git a/README.md b/README.md
index 07edfdc21bc563999ec0c70860097bc099749671..dc43084001766d909c7c0fcad9b833fe67374403 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@ unify the enrollment of users by usb drives or local
 
 -- add refresh button (Cristian)
 
--- check if the user is root (id -u)
+-- check if the user is root (id -r -u)
 
 -- add main screen to root user (Cristian) 
 
@@ -22,4 +22,4 @@ ID RANGES(add variables)
 
 --
 
-add user
\ No newline at end of file
+add user