diff --git a/webapp_admin/README.md b/webapp_admin/README.md
index b45ada3..1b4ff6a 100644
--- a/webapp_admin/README.md
+++ b/webapp_admin/README.md
@@ -12,8 +12,8 @@ Reset WebApp settings
 Change free/busy to 36 months
 > python3 webapp_admin -u john --free-busy=36
 
-If you want to make a change for all users don't pass the user parameter. Example:
-> python3 webapp_admin --icons Breeze
+If you want to make a change for all users pass the --all-users parameter. Example:
+> python3 webapp_admin --all-users --icons Breeze
 
 # Dependencies
 
@@ -21,4 +21,4 @@ If you want to make a change for all users don't pass the user parameter. Exampl
 - python-kopano
 - python-mapi
 - OpenSSL
-- dotty_dict
\ No newline at end of file
+- dotty_dict