diff --git a/zbx-smart-readme.md b/zbx-smart-readme.md
index 1e9f95f..1755f96 100644
--- a/zbx-smart-readme.md
+++ b/zbx-smart-readme.md
@@ -12,7 +12,7 @@ This script skips USB-Devices to prevent external backup disks
 from waking up all over the day.
 To include those USB-drives add the parameter:
 - Bash-version: `--smart-with-external`
-- Powershell-version: `-smart-with-external $%rue`
+- Powershell-version: `-smart-with-external $true`
 
 
 Sample crontab entry